Can you reproduce this at will with an updated KDE + Qt build ? 
Thanks

Didn't use that system for a while. Did a full upgrade today (current SuSE factory level). After the upgrade the (bottom) panel was completely messed up (rendering completely broken; essentially nothing painted in the size or position where is should have painted). Deleted panel and started adding applets again. All was fine until once again I tried to add the logout-applet. Then rendering went wild again with e.g. the systray painting itself vertically in the top middle of the desktop outside of any panel and the other applets also positioned randomly across the desktop with random large sizes... should have taken a screenshot :/
So... I still have a problem with adding a logout-applet to the panel, but I currently don't get any crashes anymore...

Ok. I'm going to close this report as WORKSFORME as the original crash is gone. Please report your panel messed up in a new report. Thanks a lot.

I can reproduce it on KDE 4.3.4 (openSUSE 11.2).

After first dropping of plasmoid on the panel, an empty space appears and no plasmoid gets started in there.

After second dropping of plasmoid, Plasma crashes.

@Jakub: if you are still experiencing the bug, could you provide a backtrace using the CrashHandler dialog ? (your crash may be a different one) Regards

Seems gone on 4.4.0.

Thanks

*** Bug 192000 has been marked as a duplicate of this bug. ***

*** Bug 256732 has been marked as a duplicate of this bug. ***

*** Bug 260767 has been marked as a duplicate of this bug. ***

Please re-open, Bug 260767 has been closed as a duplicate of this one, but I saw it on 4.5.4.

So it seems the problem is still there.

*** Bug 261405 has been marked as a duplicate of this bug. ***

might be related to 241562

*** Bug 262318 has been marked as a duplicate of this bug. ***

Created attachment 57162 [details]
New crash information added by DrKonqi

I was configuring the playlist layout, and was adding items from the Playlist Layout Editor. Amarok crashed after swapping "Album artist" with "Album". I landed in this bug starting from Bug 247176, which was essentially the same crash.

[Comment from a bug triager]
Bug 265659 is about KDE SC 4.5.95 + Qt 4.7.1

Created attachment 58404 [details]
New crash information added by DrKonqi

plasma-desktop (0.4) on KDE Platform 4.6.00 (4.6.0) using Qt 4.7.0

- What I was doing when the application crashed:

adding a plasmoid to the taskbar for google chromium after adding a custom wallpaper and crashed.

-- Backtrace (Reduced):
#7  QCoreApplication::postEvent (receiver=0xb5bec28, event=0xa597390, priority=0) at kernel/qcoreapplication.cpp:1133
#8  0x03b6faac in QCoreApplication::postEvent (receiver=0xb5bec28, event=0xa597390) at kernel/qcoreapplication.cpp:1094
#9  0x03b7e2c4 in QObject::deleteLater (this=0xb5bec28) at kernel/qobject.cpp:2131
#10 0x05ed00bc in QX11Data::xdndHandleFinished (this=0x9ea4a88, xe=0xbfd3c19c, passive=false) at kernel/qdnd_x11.cpp:1254
#11 0x05eaa716 in QApplication::x11ClientMessage (this=0x9e9e940, w=0xaef8678, event=0xbfd3c19c, passive_only=false) at kernel/qapplication_x11.cpp:3107

*** Bug 265659 has been marked as a duplicate of this bug. ***

Created attachment 63409 [details]
New crash information added by DrKonqi

plasma-desktop (0.4) on KDE Platform 4.6.5 (4.6.5) using Qt 4.7.3

- What I was doing when the application crashed:
Adding Lock/Logout Widget to Taskbar panel

- Unusual behavior I noticed:
For some reason, when you hover over a desktop selection in the desktop pager icon in the taskbar it lets you drop a widget onto one of the mini screens.  Not sure if related but why would a widget allow you to drop another widget onto it?

-- Backtrace (Reduced):
#6  QCoreApplication::postEvent (receiver=0x37b7170, event=0x36d9ce0, priority=0) at kernel/qcoreapplication.cpp:1132
#7  0x0000003f0a44253a in QX11Data::xdndHandleFinished (this=<optimized out>, xe=0x7fff257feb10, passive=false) at kernel/qdnd_x11.cpp:1254
#8  0x0000003f0a434b13 in QApplication::x11ClientMessage (this=<optimized out>, w=0x2ffba50, event=<optimized out>, passive_only=<optimized out>) at kernel/qapplication_x11.cpp:3158
#9  0x0000003f0a432f84 in QApplication::x11ProcessEvent (this=0x1cb2ed0, event=0x7fff257feb10) at kernel/qapplication_x11.cpp:3726
#10 0x0000003f0a45a2ec in x11EventSourceDispatch (s=0x1cd6e20, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:148

Created attachment 66773 [details]
New crash information added by DrKonqi

plasma-desktop (0.4) on KDE Platform 4.7.2 (4.7.2) using Qt 4.7.4

- What I was doing when the application crashed:

Attempting to add Lock/Logout applet to panel

-- Backtrace (Reduced):
#6  0x00007fed7c55c23c in QMutex::lock (this=0x2b582ca) at thread/qmutex.cpp:151
#7  0x00007fed7c64b999 in QCoreApplication::postEvent (receiver=0x27ccaa0, event=0x25094c0, priority=0) at kernel/qcoreapplication.cpp:1196
#8  0x00007fed7ba8729a in QX11Data::xdndHandleFinished (this=<optimized out>, xe=0x7fff9c081220, passive=false) at kernel/qdnd_x11.cpp:1254
#9  0x00007fed7ba793c3 in QApplication::x11ClientMessage (this=<optimized out>, w=0x297b9d0, event=<optimized out>, passive_only=<optimized out>) at kernel/qapplication_x11.cpp:3204
#10 0x00007fed7ba778fb in QApplication::x11ProcessEvent (this=0x1650210, event=0x7fff9c081220) at kernel/qapplication_x11.cpp:3829

*** Bug 292598 has been marked as a duplicate of this bug. ***

Created attachment 69953 [details]
New crash information added by DrKonqi

plasma-desktop (0.4) on KDE Platform 4.8.1 (4.8.1) using Qt 4.8.0

- What I was doing when the application crashed:

Trying to add widgets to the "taskbar" panel.

-- Backtrace (Reduced):
#7  QMutex::lock (this=0x9f4a13c) at thread/qmutex.cpp:153
#8  0x4c36cdcc in QCoreApplication::postEvent (receiver=0x96486f8, event=0xa90c6e8, priority=0) at kernel/qcoreapplication.cpp:1281
#9  0x4c36d16c in QCoreApplication::postEvent (receiver=0x96486f8, event=0xa90c6e8) at kernel/qcoreapplication.cpp:1234
#10 0x4c37c595 in QObject::deleteLater (this=0x96486f8) at kernel/qobject.cpp:2084
#11 0x4cbba887 in QX11Data::xdndHandleFinished (this=0x91f66e0, xe=0xbfb6348c, passive=false) at kernel/qdnd_x11.cpp:1248

Reopening based on last information.

Created attachment 71869 [details]
New crash information added by DrKonqi

plasma-desktop (0.4) on KDE Platform 4.8.3 (4.8.3) using Qt 4.8.1

- What I was doing when the application crashed:

Adding a launcher (shortcut to vlc) to the launcher zone (by right-clicking -> add launcher).

-- Backtrace (Reduced):
#7  QCoreApplication::postEvent (receiver=0xb3efa80, event=0xaca5f00, priority=0) at kernel/qcoreapplication.cpp:1273
#8  0xb63ac6fb in QCoreApplication::postEvent (receiver=0xb3efa80, event=0xaca5f00) at kernel/qcoreapplication.cpp:1234
#9  0xb63bc024 in QObject::deleteLater (this=0xb3efa80) at kernel/qobject.cpp:2084
#10 0xb5930ba6 in QX11Data::xdndHandleFinished (this=0x9fc6e38, xe=0xbfa6933c, passive=false) at kernel/qdnd_x11.cpp:1256
#11 0xb5921c3b in QApplication::x11ClientMessage (this=0x9fafe00, w=0xad56a80, event=0xbfa6933c, passive_only=false) at kernel/qapplication_x11.cpp:3242

*** Bug 302493 has been marked as a duplicate of this bug. ***

*** Bug 307739 has been marked as a duplicate of this bug. ***

*** Bug 308126 has been marked as a duplicate of this bug. ***

Confirmed on kubuntu 12.10 x64 KDE 4.9.2

I was adding Lancelot Launcher to panel. Every time plasma desktop crashes, and when plasma is restarted by itsels, panel is all messed up.

*** Bug 292640 has been marked as a duplicate of this bug. ***

*** Bug 293877 has been marked as a duplicate of this bug. ***

*** Bug 310463 has been marked as a duplicate of this bug. ***

*** Bug 310989 has been marked as a duplicate of this bug. ***

*** Bug 311749 has been marked as a duplicate of this bug. ***

*** Bug 314336 has been marked as a duplicate of this bug. ***

*** Bug 316266 has been marked as a duplicate of this bug. ***

*** Bug 318728 has been marked as a duplicate of this bug. ***

Created attachment 80300 [details]
similar crash report

I experienced a similar crash w/ plasma desktop 4.8.4-6 on Debian Wheezy.

Created attachment 82253 [details]
New crash information added by DrKonqi

plasma-desktop (4.11.1) on KDE Platform 4.11.1 using Qt 4.8.4

Tried to add the Battery Monitor widget to the Taskbar panel

-- Backtrace (Reduced):
#6  QCoreApplication::postEvent (receiver=receiver@entry=0xe3dbe40, event=0x10345a30, priority=priority@entry=0) at kernel/qcoreapplication.cpp:1343
#7  0x00007fc164239e07 in QCoreApplication::postEvent (receiver=receiver@entry=0xe3dbe40, event=<optimized out>) at kernel/qcoreapplication.cpp:1304
#8  0x00007fc164248324 in QObject::deleteLater (this=this@entry=0xe3dbe40) at kernel/qobject.cpp:2083
#9  0x00007fc163667cbd in QX11Data::xdndHandleFinished (this=<optimized out>, xe=0x7fffb17a1ab0, passive=<optimized out>) at kernel/qdnd_x11.cpp:1256
#10 0x00007fc163649db3 in QApplication::x11ClientMessage (this=<optimized out>, w=0x9e1e470, event=<optimized out>, passive_only=<optimized out>) at kernel/qapplication_x11.cpp:3256

*** Bug 329133 has been marked as a duplicate of this bug. ***

*** Bug 329087 has been marked as a duplicate of this bug. ***

*** Bug 336160 has been marked as a duplicate of this bug. ***

*** Bug 335594 has been marked as a duplicate of this bug. ***

*** Bug 332874 has been marked as a duplicate of this bug. ***

*** Bug 337408 has been marked as a duplicate of this bug. ***

I still have no idea if this is a Qt bug, or a bug in Plasma code. Other Qt developers seem to be faced with the same problem, e.g. see https://qt-project.org/forums/viewthread/24927

New link: https://forum.qt.io/topic/24364/crash-within-qt-code-using-drag-and-drop-qt-bug

*** Bug 346365 has been marked as a duplicate of this bug. ***

*** Bug 346503 has been marked as a duplicate of this bug. ***

*** Bug 346717 has been marked as a duplicate of this bug. ***

(Same bug) desktop crash after trashcan plasmoid drag onto pannel :
(Sorry I'm a newbie, so this is the copy-paste of the report I couldn't send directly from the KDE bug manager - I don't know how to present this another way)
Application: plasma-desktop (4.11.14)
KDE Platform Version: 4.12.5
Qt Version: 4.8.6
Operating System: Linux 3.14.41-server-1.mga4 i686
Distribution: "Mageia 4"

-- Information about the crash:
- What I was doing when the application crashed:
(Twice tried and twice obtained problems:) Wishing to add a trashcan in my pannel (that I placed in top of screen, if this has incidence on result), I try to select the plasmoid in the list to drag it to the pannel. 1st time, system frozen, I had press escape key to unfreeze (return to previous pannel without my trashcan plasmoid installed... So ->) 2nd time, frozen system again, but I had to logout (ctrl+alt+suppr) to unblock my screen (and of course still no trashcan on my pannel, it's reason why ->) 3rd time I try again to drag that damned trashcan plasmoid onto the pannel and the whole plasma desktop crashed, creating at least a report to send to you... I found a different way to force installation of my trashcan by dropping the file trash.desktop onto the pannel to create a link, but I wonder why the plasmoid doesn't work anymore (I used it a lot on past installations without pb...). Hope this could help, thanks for a wonderful desktop that I would never exchange for any number Windoze could produce...

The crash can be reproduced sometimes.

-- Backtrace:
Application: Outil de gestion de fenêtres Plasma (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib/i686/libthread_db.so.1".
gobject.pyc: gdb was not built with custom backtrace support, disabling.
[Current thread is 1 (Thread 0xb52a4740 (LWP 4445))]

Thread 3 (Thread 0xa3954b40 (LWP 4448)):
#0  0xb7708428 in __kernel_vsyscall ()
#1  0xb6bd373b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i686/libpthread.so.0
#2  0xb0bbb422 in QTWTF::TCMalloc_PageHeap::scavengerThread() () from /lib/libQtScript.so.4
#3  0xb0bbb46f in QTWTF::TCMalloc_PageHeap::runScavengerThread(void*) () from /lib/libQtScript.so.4
#4  0xb6bcfd40 in start_thread () from /lib/i686/libpthread.so.0
#5  0xb5f6a45e in clone () from /lib/i686/libc.so.6

Thread 2 (Thread 0xa10ffb40 (LWP 4452)):
#0  0xb7708428 in __kernel_vsyscall ()
#1  0xb5f787b2 in clock_gettime () from /lib/i686/libc.so.6
#2  0xb6ca6f2c in qt_gettime() () from /lib/libQtCore.so.4
#3  0xb6d8fa32 in QTimerInfoList::timerWait(timeval&) () from /lib/libQtCore.so.4
#4  0xb6d8df9b in timerSourcePrepareHelper(GTimerSource*, int*) () from /lib/libQtCore.so.4
#5  0xb6d8e02a in timerSourcePrepare(_GSource*, int*) () from /lib/libQtCore.so.4
#6  0xb5908ff3 in g_main_context_prepare () from /lib/libglib-2.0.so.0
#7  0xb590990f in g_main_context_iterate.isra.23 () from /lib/libglib-2.0.so.0
#8  0xb5909b58 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#9  0xb6d8e0d7 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/libQtCore.so.4
#10 0xb6d5d583 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/libQtCore.so.4
#11 0xb6d5d8a9 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/libQtCore.so.4
#12 0xb6c4905d in QThread::exec() () from /lib/libQtCore.so.4
#13 0xb6d3d9a4 in QInotifyFileSystemWatcherEngine::run() () from /lib/libQtCore.so.4
#14 0xb6c4b9ef in QThreadPrivate::start(void*) () from /lib/libQtCore.so.4
#15 0xb6bcfd40 in start_thread () from /lib/i686/libpthread.so.0
#16 0xb5f6a45e in clone () from /lib/i686/libc.so.6

Thread 1 (Thread 0xb52a4740 (LWP 4445)):
[KCrash Handler]
#6  0xb6d7360a in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /lib/libQtCore.so.4
#7  0xa2720295 in DeclarativeDragArea::drop(int) () from /usr/lib/kde4/imports/org/kde/draganddrop/libdraganddropplugin.so
#8  0xa2722fc2 in DeclarativeDragArea::mouseMoveEvent(QGraphicsSceneMouseEvent*) () from /usr/lib/kde4/imports/org/kde/draganddrop/libdraganddropplugin.so
#9  0xa27230a4 in DeclarativeDragArea::sceneEventFilter(QGraphicsItem*, QEvent*) () from /usr/lib/kde4/imports/org/kde/draganddrop/libdraganddropplugin.so
#10 0xb68c21a3 in QGraphicsScenePrivate::filterDescendantEvent(QGraphicsItem*, QEvent*) () from /lib/libQtGui.so.4
#11 0xb68c7038 in QGraphicsScenePrivate::sendEvent(QGraphicsItem*, QEvent*) () from /lib/libQtGui.so.4
#12 0xb68c75e6 in QGraphicsScenePrivate::sendMouseEvent(QGraphicsSceneMouseEvent*) () from /lib/libQtGui.so.4
#13 0xb68cf747 in QGraphicsScene::mouseMoveEvent(QGraphicsSceneMouseEvent*) () from /lib/libQtGui.so.4
#14 0xb68dc728 in QGraphicsScene::event(QEvent*) () from /lib/libQtGui.so.4
#15 0xb624f774 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/libQtGui.so.4
#16 0xb6256190 in QApplication::notify(QObject*, QEvent*) () from /lib/libQtGui.so.4
#17 0xb74a9e54 in KApplication::notify(QObject*, QEvent*) () from /lib/libkdeui.so.5
#18 0xb6d5ebca in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /lib/libQtCore.so.4
#19 0xb624de5d in qt_sendSpontaneousEvent(QObject*, QEvent*) () from /lib/libQtGui.so.4
#20 0xb68f450d in QGraphicsViewPrivate::mouseMoveEventHandler(QMouseEvent*) () from /lib/libQtGui.so.4
#21 0xb68f5620 in QGraphicsView::mouseMoveEvent(QMouseEvent*) () from /lib/libQtGui.so.4
#22 0xb62a9a7c in QWidget::event(QEvent*) () from /lib/libQtGui.so.4
#23 0xb66afe2c in QFrame::event(QEvent*) () from /lib/libQtGui.so.4
#24 0xb673f058 in QAbstractScrollArea::viewportEvent(QEvent*) () from /lib/libQtGui.so.4
#25 0xb68f7067 in QGraphicsView::viewportEvent(QEvent*) () from /lib/libQtGui.so.4
#26 0xb673f2d6 in QAbstractScrollAreaFilter::eventFilter(QObject*, QEvent*) () from /lib/libQtGui.so.4
#27 0xb6d5ed3e in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () from /lib/libQtCore.so.4
#28 0xb624f751 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/libQtGui.so.4
#29 0xb62573f5 in QApplication::notify(QObject*, QEvent*) () from /lib/libQtGui.so.4
#30 0xb74a9e54 in KApplication::notify(QObject*, QEvent*) () from /lib/libkdeui.so.5
#31 0xb6d5ebca in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /lib/libQtCore.so.4
#32 0xb6255a01 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from /lib/libQtGui.so.4
#33 0xb62d6018 in QETWidget::translateMouseEvent(_XEvent const*) () from /lib/libQtGui.so.4
#34 0xb62d46e0 in QApplication::x11ProcessEvent(_XEvent*) () from /lib/libQtGui.so.4
#35 0xb62ff0b4 in x11EventSourceDispatch(_GSource*, int (*)(void*), void*) () from /lib/libQtGui.so.4
#36 0xb59096ee in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#37 0xb5909a98 in g_main_context_iterate.isra.23 () from /lib/libglib-2.0.so.0
#38 0xb5909b58 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#39 0xb6d8e0b3 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/libQtCore.so.4
#40 0xb62ff16e in QGuiEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/libQtGui.so.4
#41 0xb6d5d583 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/libQtCore.so.4
#42 0xb6d5d8a9 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/libQtCore.so.4
#43 0xb62e6956 in QDragManager::drag(QDrag*) () from /lib/libQtGui.so.4
#44 0xb6262464 in QDrag::exec(QFlags<Qt::DropAction>, Qt::DropAction) () from /lib/libQtGui.so.4
#45 0xa2722fb6 in DeclarativeDragArea::mouseMoveEvent(QGraphicsSceneMouseEvent*) () from /usr/lib/kde4/imports/org/kde/draganddrop/libdraganddropplugin.so
#46 0xa27230a4 in DeclarativeDragArea::sceneEventFilter(QGraphicsItem*, QEvent*) () from /usr/lib/kde4/imports/org/kde/draganddrop/libdraganddropplugin.so
#47 0xb68c21a3 in QGraphicsScenePrivate::filterDescendantEvent(QGraphicsItem*, QEvent*) () from /lib/libQtGui.so.4
#48 0xb68c7038 in QGraphicsScenePrivate::sendEvent(QGraphicsItem*, QEvent*) () from /lib/libQtGui.so.4
#49 0xb68c75e6 in QGraphicsScenePrivate::sendMouseEvent(QGraphicsSceneMouseEvent*) () from /lib/libQtGui.so.4
#50 0xb68cf747 in QGraphicsScene::mouseMoveEvent(QGraphicsSceneMouseEvent*) () from /lib/libQtGui.so.4
#51 0xb68dc728 in QGraphicsScene::event(QEvent*) () from /lib/libQtGui.so.4
#52 0xb624f774 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/libQtGui.so.4
#53 0xb6256190 in QApplication::notify(QObject*, QEvent*) () from /lib/libQtGui.so.4
#54 0xb74a9e54 in KApplication::notify(QObject*, QEvent*) () from /lib/libkdeui.so.5
#55 0xb6d5ebca in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /lib/libQtCore.so.4
#56 0xb624de5d in qt_sendSpontaneousEvent(QObject*, QEvent*) () from /lib/libQtGui.so.4
#57 0xb68f450d in QGraphicsViewPrivate::mouseMoveEventHandler(QMouseEvent*) () from /lib/libQtGui.so.4
#58 0xb68f5620 in QGraphicsView::mouseMoveEvent(QMouseEvent*) () from /lib/libQtGui.so.4
#59 0xb62a9a7c in QWidget::event(QEvent*) () from /lib/libQtGui.so.4
#60 0xb66afe2c in QFrame::event(QEvent*) () from /lib/libQtGui.so.4
#61 0xb673f058 in QAbstractScrollArea::viewportEvent(QEvent*) () from /lib/libQtGui.so.4
#62 0xb68f7067 in QGraphicsView::viewportEvent(QEvent*) () from /lib/libQtGui.so.4
#63 0xb673f2d6 in QAbstractScrollAreaFilter::eventFilter(QObject*, QEvent*) () from /lib/libQtGui.so.4
#64 0xb6d5ed3e in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () from /lib/libQtCore.so.4
#65 0xb624f751 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/libQtGui.so.4
#66 0xb62573f5 in QApplication::notify(QObject*, QEvent*) () from /lib/libQtGui.so.4
#67 0xb74a9e54 in KApplication::notify(QObject*, QEvent*) () from /lib/libkdeui.so.5
#68 0xb6d5ebca in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /lib/libQtCore.so.4
#69 0xb6255a01 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from /lib/libQtGui.so.4
#70 0xb62d6018 in QETWidget::translateMouseEvent(_XEvent const*) () from /lib/libQtGui.so.4
#71 0xb62d46e0 in QApplication::x11ProcessEvent(_XEvent*) () from /lib/libQtGui.so.4
#72 0xb62ff0b4 in x11EventSourceDispatch(_GSource*, int (*)(void*), void*) () from /lib/libQtGui.so.4
#73 0xb59096ee in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#74 0xb5909a98 in g_main_context_iterate.isra.23 () from /lib/libglib-2.0.so.0
#75 0xb5909b58 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#76 0xb6d8e0b3 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/libQtCore.so.4
#77 0xb62ff16e in QGuiEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/libQtGui.so.4
#78 0xb6d5d583 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/libQtCore.so.4
#79 0xb6d5d8a9 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/libQtCore.so.4
#80 0xb62e6956 in QDragManager::drag(QDrag*) () from /lib/libQtGui.so.4
#81 0xb6262464 in QDrag::exec(QFlags<Qt::DropAction>, Qt::DropAction) () from /lib/libQtGui.so.4
#82 0xa2722fb6 in DeclarativeDragArea::mouseMoveEvent(QGraphicsSceneMouseEvent*) () from /usr/lib/kde4/imports/org/kde/draganddrop/libdraganddropplugin.so
#83 0xa27230a4 in DeclarativeDragArea::sceneEventFilter(QGraphicsItem*, QEvent*) () from /usr/lib/kde4/imports/org/kde/draganddrop/libdraganddropplugin.so
#84 0xb68c21a3 in QGraphicsScenePrivate::filterDescendantEvent(QGraphicsItem*, QEvent*) () from /lib/libQtGui.so.4
#85 0xb68c7038 in QGraphicsScenePrivate::sendEvent(QGraphicsItem*, QEvent*) () from /lib/libQtGui.so.4
#86 0xb68c75e6 in QGraphicsScenePrivate::sendMouseEvent(QGraphicsSceneMouseEvent*) () from /lib/libQtGui.so.4
#87 0xb68cf747 in QGraphicsScene::mouseMoveEvent(QGraphicsSceneMouseEvent*) () from /lib/libQtGui.so.4
#88 0xb68dc728 in QGraphicsScene::event(QEvent*) () from /lib/libQtGui.so.4
#89 0xb624f774 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/libQtGui.so.4
#90 0xb6256190 in QApplication::notify(QObject*, QEvent*) () from /lib/libQtGui.so.4
#91 0xb74a9e54 in KApplication::notify(QObject*, QEvent*) () from /lib/libkdeui.so.5
#92 0xb6d5ebca in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /lib/libQtCore.so.4
#93 0xb624de5d in qt_sendSpontaneousEvent(QObject*, QEvent*) () from /lib/libQtGui.so.4
#94 0xb68f450d in QGraphicsViewPrivate::mouseMoveEventHandler(QMouseEvent*) () from /lib/libQtGui.so.4
#95 0xb68f5620 in QGraphicsView::mouseMoveEvent(QMouseEvent*) () from /lib/libQtGui.so.4
#96 0xb62a9a7c in QWidget::event(QEvent*) () from /lib/libQtGui.so.4
#97 0xb66afe2c in QFrame::event(QEvent*) () from /lib/libQtGui.so.4
#98 0xb673f058 in QAbstractScrollArea::viewportEvent(QEvent*) () from /lib/libQtGui.so.4
#99 0xb68f7067 in QGraphicsView::viewportEvent(QEvent*) () from /lib/libQtGui.so.4
#100 0xb673f2d6 in QAbstractScrollAreaFilter::eventFilter(QObject*, QEvent*) () from /lib/libQtGui.so.4
#101 0xb6d5ed3e in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () from /lib/libQtCore.so.4
#102 0xb624f751 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/libQtGui.so.4
#103 0xb62573f5 in QApplication::notify(QObject*, QEvent*) () from /lib/libQtGui.so.4
#104 0xb74a9e54 in KApplication::notify(QObject*, QEvent*) () from /lib/libkdeui.so.5
#105 0xb6d5ebca in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /lib/libQtCore.so.4
#106 0xb6255a01 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from /lib/libQtGui.so.4
#107 0xb62d6018 in QETWidget::translateMouseEvent(_XEvent const*) () from /lib/libQtGui.so.4
#108 0xb62d46e0 in QApplication::x11ProcessEvent(_XEvent*) () from /lib/libQtGui.so.4
#109 0xb62ff0b4 in x11EventSourceDispatch(_GSource*, int (*)(void*), void*) () from /lib/libQtGui.so.4
#110 0xb59096ee in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#111 0xb5909a98 in g_main_context_iterate.isra.23 () from /lib/libglib-2.0.so.0
#112 0xb5909b58 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#113 0xb6d8e0b3 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/libQtCore.so.4
#114 0xb62ff16e in QGuiEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/libQtGui.so.4
#115 0xb6d5d583 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/libQtCore.so.4
#116 0xb6d5d8a9 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/libQtCore.so.4
#117 0xb62e6956 in QDragManager::drag(QDrag*) () from /lib/libQtGui.so.4
#118 0xb6262464 in QDrag::exec(QFlags<Qt::DropAction>, Qt::DropAction) () from /lib/libQtGui.so.4
#119 0xa2722fb6 in DeclarativeDragArea::mouseMoveEvent(QGraphicsSceneMouseEvent*) () from /usr/lib/kde4/imports/org/kde/draganddrop/libdraganddropplugin.so
#120 0xa27230a4 in DeclarativeDragArea::sceneEventFilter(QGraphicsItem*, QEvent*) () from /usr/lib/kde4/imports/org/kde/draganddrop/libdraganddropplugin.so
#121 0xb68c21a3 in QGraphicsScenePrivate::filterDescendantEvent(QGraphicsItem*, QEvent*) () from /lib/libQtGui.so.4
#122 0xb68c7038 in QGraphicsScenePrivate::sendEvent(QGraphicsItem*, QEvent*) () from /lib/libQtGui.so.4
#123 0xb68c75e6 in QGraphicsScenePrivate::sendMouseEvent(QGraphicsSceneMouseEvent*) () from /lib/libQtGui.so.4
#124 0xb68cf747 in QGraphicsScene::mouseMoveEvent(QGraphicsSceneMouseEvent*) () from /lib/libQtGui.so.4
#125 0xb68dc728 in QGraphicsScene::event(QEvent*) () from /lib/libQtGui.so.4
#126 0xb624f774 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/libQtGui.so.4
#127 0xb6256190 in QApplication::notify(QObject*, QEvent*) () from /lib/libQtGui.so.4
#128 0xb74a9e54 in KApplication::notify(QObject*, QEvent*) () from /lib/libkdeui.so.5
#129 0xb6d5ebca in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /lib/libQtCore.so.4
#130 0xb624de5d in qt_sendSpontaneousEvent(QObject*, QEvent*) () from /lib/libQtGui.so.4
#131 0xb68f450d in QGraphicsViewPrivate::mouseMoveEventHandler(QMouseEvent*) () from /lib/libQtGui.so.4
#132 0xb68f5620 in QGraphicsView::mouseMoveEvent(QMouseEvent*) () from /lib/libQtGui.so.4
#133 0xb62a9a7c in QWidget::event(QEvent*) () from /lib/libQtGui.so.4
#134 0xb66afe2c in QFrame::event(QEvent*) () from /lib/libQtGui.so.4
#135 0xb673f058 in QAbstractScrollArea::viewportEvent(QEvent*) () from /lib/libQtGui.so.4
#136 0xb68f7067 in QGraphicsView::viewportEvent(QEvent*) () from /lib/libQtGui.so.4
#137 0xb673f2d6 in QAbstractScrollAreaFilter::eventFilter(QObject*, QEvent*) () from /lib/libQtGui.so.4
#138 0xb6d5ed3e in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () from /lib/libQtCore.so.4
#139 0xb624f751 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/libQtGui.so.4
#140 0xb62573f5 in QApplication::notify(QObject*, QEvent*) () from /lib/libQtGui.so.4
#141 0xb74a9e54 in KApplication::notify(QObject*, QEvent*) () from /lib/libkdeui.so.5
#142 0xb6d5ebca in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /lib/libQtCore.so.4
#143 0xb6255a01 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from /lib/libQtGui.so.4
#144 0xb62d6018 in QETWidget::translateMouseEvent(_XEvent const*) () from /lib/libQtGui.so.4
#145 0xb62d46e0 in QApplication::x11ProcessEvent(_XEvent*) () from /lib/libQtGui.so.4
#146 0xb62ff0b4 in x11EventSourceDispatch(_GSource*, int (*)(void*), void*) () from /lib/libQtGui.so.4
#147 0xb59096ee in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#148 0xb5909a98 in g_main_context_iterate.isra.23 () from /lib/libglib-2.0.so.0
#149 0xb5909b58 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#150 0xb6d8e0b3 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/libQtCore.so.4
#151 0xb62ff16e in QGuiEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/libQtGui.so.4
#152 0xb6d5d583 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/libQtCore.so.4
#153 0xb6d5d8a9 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/libQtCore.so.4
#154 0xb6d631ce in QCoreApplication::exec() () from /lib/libQtCore.so.4
#155 0xb624dc04 in QApplication::exec() () from /lib/libQtGui.so.4
#156 0xaf2fdde7 in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#157 0x0804f5a3 in launch(int, char const*, char const*, char const*, int, char const*, bool, char const*, bool, char const*) ()
#158 0x08050473 in handle_launcher_request(int, char const*) [clone .isra.12] ()
#159 0x08050b11 in handle_requests(int) ()
#160 0x0804c196 in main ()

Rapporter à https://bugs.kde.org/

Hello!

This bug report was filed for KDE Plasma 4, which reached end-of-support status in August 2015. KDE Plasma 5's desktop shell has been almost completely rewritten for better performance and usability, so it is likely that this bug has already been resolved in Plasma 5.

Accordingly, we hope you understand why we must close this bug report. If the issue described  here is still present in KDE Plasma 5.12 or later, please feel free to open a new ticket in the "plasmashell" product after reading https://community.kde.org/Get_Involved/Bug_Reporting

If you would like to get involved in KDE's bug triaging effort so that future mass bug closes like this are less likely, please read https://community.kde.org/Get_Involved#Bug_Triaging

Thanks for your understanding!

Nate Graham