Application: dolphin (2.0)
KDE Platform Version: 4.8.2 (4.8.2)
Qt Version: 4.8.1
Operating System: Linux 3.2.0-24-generic x86_64
Distribution: Ubuntu 12.04 LTS

-- Information about the crash:
- What I was doing when the application crashed:
left clicked a file in dolphin
alt+tab to select smplayer 
(in an attempt to drop file in playlist of smplayer)
upon releasing alt+tab dolphin crashed
because I have KDE 4.8.2 and bugtracker says resolved in 4.8.1, I found it necessary to report this

tried it a second time and crashed again

by the way: kubuntu 12.04 is GREAT 
thanks a lot guys 
canonical is wrong! kde is the best!

-- Backtrace:
Application: Dolphin (dolphin), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f90dc0e5780 (LWP 2310))]

Thread 3 (Thread 0x7f90c7e6b700 (LWP 2311)):
#0  0x00007f90d3985127 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f90d8a33426 in QEventDispatcherGlib::processEvents (this=0x7f90c00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#2  0x00007f90d8a02c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#3  0x00007f90d8a02ed7 in QEventLoop::exec (this=0x7f90c7e6add0, flags=...) at kernel/qeventloop.cpp:204
#4  0x00007f90d8901fa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#5  0x00007f90d89e29ff in QInotifyFileSystemWatcherEngine::run (this=0xd6c110) at io/qfilesystemwatcher_inotify.cpp:248
#6  0x00007f90d8904fcb in QThreadPrivate::start (arg=0xd6c110) at thread/qthread_unix.cpp:298
#7  0x00007f90d4249e9a in start_thread (arg=0x7f90c7e6b700) at pthread_create.c:308
#8  0x00007f90db9ad4bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#9  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f90c6cad700 (LWP 2312)):
#0  0x00007fff8adff8de in ?? ()
#1  0x00007f90d3c3615d in __GI_clock_gettime (clock_id=<optimized out>, tp=<optimized out>) at ../sysdeps/unix/clock_gettime.c:116
#2  0x00007f90d895bbb4 in do_gettime (frac=0x7f90c6cacb98, sec=0x7f90c6cacb90) at tools/qelapsedtimer_unix.cpp:123
#3  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#4  0x00007f90d8a33b8d in QTimerInfoList::updateCurrentTime (this=0x7f90b8002660) at kernel/qeventdispatcher_unix.cpp:343
#5  0x00007f90d8a33ec3 in QTimerInfoList::timerWait (this=0x7f90b8002660, tm=...) at kernel/qeventdispatcher_unix.cpp:450
#6  0x00007f90d8a3297c in timerSourcePrepareHelper (src=<optimized out>, timeout=0x7f90c6cacc6c) at kernel/qeventdispatcher_glib.cpp:136
#7  0x00007f90d8a32a25 in timerSourcePrepare (source=<optimized out>, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#8  0x00007f90d398471e in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007f90d3984f1b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f90d3985124 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007f90d8a33426 in QEventDispatcherGlib::processEvents (this=0x7f90b80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#12 0x00007f90d8a02c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#13 0x00007f90d8a02ed7 in QEventLoop::exec (this=0x7f90c6cacdd0, flags=...) at kernel/qeventloop.cpp:204
#14 0x00007f90d8901fa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#15 0x00007f90d89e29ff in QInotifyFileSystemWatcherEngine::run (this=0x11a70a0) at io/qfilesystemwatcher_inotify.cpp:248
#16 0x00007f90d8904fcb in QThreadPrivate::start (arg=0x11a70a0) at thread/qthread_unix.cpp:298
#17 0x00007f90d4249e9a in start_thread (arg=0x7f90c6cad700) at pthread_create.c:308
#18 0x00007f90db9ad4bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#19 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f90dc0e5780 (LWP 2310)):
[KCrash Handler]
#6  QDragManager::move (this=0x172df80, globalPos=...) at kernel/qdnd_x11.cpp:1683
#7  0x00007f90d7b98499 in QDragManager::eventFilter (this=0x172df80, o=<optimized out>, e=<optimized out>) at kernel/qdnd_x11.cpp:1308
#8  0x00007f90d8a03f6c in QCoreApplicationPrivate::sendThroughApplicationEventFilters (this=0xcdba50, receiver=0x17ef790, event=0x7fff8ad13f10) at kernel/qcoreapplication.cpp:967
#9  0x00007f90d7b09806 in QApplicationPrivate::notify_helper (this=0xcdba50, receiver=0x17ef790, e=0x7fff8ad13f10) at kernel/qapplication.cpp:4534
#10 0x00007f90d7b0f0bf in QApplication::notify (this=<optimized out>, receiver=0x17ef790, e=0x7fff8ad13f10) at kernel/qapplication.cpp:4102
#11 0x00007f90d9463b46 in KApplication::notify (this=0x7fff8ad17800, receiver=0x17ef790, event=0x7fff8ad13f10) at ../../kdeui/kernel/kapplication.cpp:311
#12 0x00007f90d8a03e9c in QCoreApplication::notifyInternal (this=0x7fff8ad17800, receiver=0x17ef790, event=0x7fff8ad13f10) at kernel/qcoreapplication.cpp:876
#13 0x00007f90d7b0a862 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#14 QApplicationPrivate::sendMouseEvent (receiver=0x17ef790, event=0x7fff8ad13f10, alienWidget=0x0, nativeWidget=0x17ef790, buttonDown=0x15f70f0, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3170
#15 0x00007f90d7b89bf5 in QETWidget::translateMouseEvent (this=0x17ef790, event=<optimized out>) at kernel/qapplication_x11.cpp:4617
#16 0x00007f90d7b88bae in QApplication::x11ProcessEvent (this=0x7fff8ad17800, event=0x7fff8ad147e0) at kernel/qapplication_x11.cpp:3732
#17 0x00007f90d7bb20d2 in x11EventSourceDispatch (s=0xce0600, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#18 0x00007f90d3984c9a in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007f90d3985060 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f90d3985124 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f90d8a333bf in QEventDispatcherGlib::processEvents (this=0xcb64a0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#22 0x00007f90d7bb1d5e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#23 0x00007f90d8a02c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#24 0x00007f90d8a02ed7 in QEventLoop::exec (this=0x1651b00, flags=...) at kernel/qeventloop.cpp:204
#25 0x00007f90d7b98183 in QDragManager::drag (this=0x172df80, o=<optimized out>) at kernel/qdnd_x11.cpp:2017
#26 0x00007f90d7b1b4f8 in QDrag::exec (this=0x172d6e0, supportedActions=..., defaultDropAction=Qt::CopyAction) at kernel/qdrag.cpp:284
#27 0x00007f90dace52e7 in KItemListController::startDragging() () from /usr/lib/libdolphinprivate.so.4
#28 0x00007f90dace547e in KItemListController::mouseMoveEvent(QGraphicsSceneMouseEvent*, QTransform const&) () from /usr/lib/libdolphinprivate.so.4
#29 0x00007f90dace4c90 in KItemListController::processEvent(QEvent*, QTransform const&) () from /usr/lib/libdolphinprivate.so.4
#30 0x00007f90dacf0525 in KItemListView::event(QEvent*) () from /usr/lib/libdolphinprivate.so.4
#31 0x00007f90d7b09894 in notify_helper (e=0x7fff8ad16010, receiver=0x15f7e90, this=0xcdba50) at kernel/qapplication.cpp:4559
#32 QApplicationPrivate::notify_helper (this=0xcdba50, receiver=0x15f7e90, e=0x7fff8ad16010) at kernel/qapplication.cpp:4531
#33 0x00007f90d7b0e713 in QApplication::notify (this=0x7fff8ad17800, receiver=0x15f7e90, e=0x7fff8ad16010) at kernel/qapplication.cpp:4420
#34 0x00007f90d9463b46 in KApplication::notify (this=0x7fff8ad17800, receiver=0x15f7e90, event=0x7fff8ad16010) at ../../kdeui/kernel/kapplication.cpp:311
#35 0x00007f90d8a03e9c in QCoreApplication::notifyInternal (this=0x7fff8ad17800, receiver=0x15f7e90, event=0x7fff8ad16010) at kernel/qcoreapplication.cpp:876
#36 0x00007f90d811703e in sendEvent (event=0x7fff8ad16010, item=0x15f7ea0, this=<optimized out>) at graphicsview/qgraphicsscene.cpp:1217
#37 QGraphicsScenePrivate::sendEvent (this=<optimized out>, item=0x15f7ea0, event=0x7fff8ad16010) at graphicsview/qgraphicsscene.cpp:1197
#38 0x00007f90d8117c4a in QGraphicsScenePrivate::sendMouseEvent (this=0x15f55b0, mouseEvent=0x7fff8ad16010) at graphicsview/qgraphicsscene.cpp:1295
#39 0x00007f90d811877c in QGraphicsScene::mouseMoveEvent (this=<optimized out>, mouseEvent=0x7fff8ad16010) at graphicsview/qgraphicsscene.cpp:4102
#40 0x00007f90d81267fb in QGraphicsScene::event (this=0x15f4e60, event=0x7fff8ad16010) at graphicsview/qgraphicsscene.cpp:3451
#41 0x00007f90d7b09894 in notify_helper (e=0x7fff8ad16010, receiver=0x15f4e60, this=0xcdba50) at kernel/qapplication.cpp:4559
#42 QApplicationPrivate::notify_helper (this=0xcdba50, receiver=0x15f4e60, e=0x7fff8ad16010) at kernel/qapplication.cpp:4531
#43 0x00007f90d7b0e713 in QApplication::notify (this=0x7fff8ad17800, receiver=0x15f4e60, e=0x7fff8ad16010) at kernel/qapplication.cpp:4420
#44 0x00007f90d9463b46 in KApplication::notify (this=0x7fff8ad17800, receiver=0x15f4e60, event=0x7fff8ad16010) at ../../kdeui/kernel/kapplication.cpp:311
#45 0x00007f90d8a03e9c in QCoreApplication::notifyInternal (this=0x7fff8ad17800, receiver=0x15f4e60, event=0x7fff8ad16010) at kernel/qcoreapplication.cpp:876
#46 0x00007f90d8140729 in QGraphicsViewPrivate::mouseMoveEventHandler (this=0x15f5d00, event=0x7fff8ad16b20) at graphicsview/qgraphicsview.cpp:646
#47 0x00007f90d814095e in QGraphicsView::mouseMoveEvent (this=0x15f5cd0, event=0x7fff8ad16b20) at graphicsview/qgraphicsview.cpp:3276
#48 0x00007f90d7b5a178 in QWidget::event (this=0x15f5cd0, event=0x7fff8ad16b20) at kernel/qwidget.cpp:8347
#49 0x00007f90d7f1a3b6 in QFrame::event (this=0x15f5cd0, e=0x7fff8ad16b20) at widgets/qframe.cpp:557
#50 0x00007f90d8144b2b in QGraphicsView::viewportEvent (this=0x15f5cd0, event=0x7fff8ad16b20) at graphicsview/qgraphicsview.cpp:2866
#51 0x00007f90d8a04028 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<optimized out>, receiver=0x15f70f0, event=0x7fff8ad16b20) at kernel/qcoreapplication.cpp:986
#52 0x00007f90d7b0985f in notify_helper (e=0x7fff8ad16b20, receiver=0x15f70f0, this=0xcdba50) at kernel/qapplication.cpp:4555
#53 QApplicationPrivate::notify_helper (this=0xcdba50, receiver=0x15f70f0, e=0x7fff8ad16b20) at kernel/qapplication.cpp:4531
#54 0x00007f90d7b0f0bf in QApplication::notify (this=<optimized out>, receiver=0x15f70f0, e=0x7fff8ad16b20) at kernel/qapplication.cpp:4102
#55 0x00007f90d9463b46 in KApplication::notify (this=0x7fff8ad17800, receiver=0x15f70f0, event=0x7fff8ad16b20) at ../../kdeui/kernel/kapplication.cpp:311
#56 0x00007f90d8a03e9c in QCoreApplication::notifyInternal (this=0x7fff8ad17800, receiver=0x15f70f0, event=0x7fff8ad16b20) at kernel/qcoreapplication.cpp:876
#57 0x00007f90d7b0a862 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#58 QApplicationPrivate::sendMouseEvent (receiver=0x15f70f0, event=0x7fff8ad16b20, alienWidget=0x15f70f0, nativeWidget=0x15e7ce0, buttonDown=0x15f70f0, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3170
#59 0x00007f90d7b89bf5 in QETWidget::translateMouseEvent (this=0x15e7ce0, event=<optimized out>) at kernel/qapplication_x11.cpp:4617
#60 0x00007f90d7b88bae in QApplication::x11ProcessEvent (this=0x7fff8ad17800, event=0x7fff8ad173f0) at kernel/qapplication_x11.cpp:3732
#61 0x00007f90d7bb20d2 in x11EventSourceDispatch (s=0xce0600, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#62 0x00007f90d3984c9a in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#63 0x00007f90d3985060 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#64 0x00007f90d3985124 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#65 0x00007f90d8a333bf in QEventDispatcherGlib::processEvents (this=0xcb64a0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#66 0x00007f90d7bb1d5e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#67 0x00007f90d8a02c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#68 0x00007f90d8a02ed7 in QEventLoop::exec (this=0x7fff8ad17790, flags=...) at kernel/qeventloop.cpp:204
#69 0x00007f90d8a07f67 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#70 0x00007f90dbcc04c7 in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_dolphin.so
#71 0x00007f90db8dc76d in __libc_start_main (main=0x400640, argc=6, ubp_av=0x7fff8ad17d58, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff8ad17d48) at libc-start.c:226
#72 0x0000000000400671 in _start ()

This bug may be a duplicate of or related to bug 288750.

Possible duplicates by query: bug 299617, bug 297590, bug 294383, bug 288750, bug 288321.

Reported using DrKonqi