Application: plasma-desktop (0.4)
KDE Platform Version: 4.6.2 (4.6.2)
Qt Version: 4.7.2
Operating System: Linux 2.6.38-8-generic i686
Distribution: Ubuntu 11.04

-- Information about the crash:
- What I was doing when the application crashed:

listening to mp3's 
had firefox open 
kontact and kmail open in another workspace

The crash can be reproduced some of the time.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb60a3940 (LWP 1692))]

Thread 4 (Thread 0xb3edfb70 (LWP 1693)):
#0  0x06aa8766 in __pthread_mutex_unlock_usercnt () from /lib/i386-linux-gnu/libpthread.so.0
#1  0x007b2656 in pthread_mutex_unlock () from /lib/i386-linux-gnu/libc.so.6
#2  0x02a51ff9 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x02a52524 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0x04e80577 in QEventDispatcherGlib::processEvents (this=0x8ae7cd8, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#5  0x04e52289 in QEventLoop::processEvents (this=0xb3edf280, flags=...) at kernel/qeventloop.cpp:149
#6  0x04e52522 in QEventLoop::exec (this=0xb3edf280, flags=...) at kernel/qeventloop.cpp:201
#7  0x04d5c2a0 in QThread::exec (this=0x8addec8) at thread/qthread.cpp:492
#8  0x04e33fdb in QInotifyFileSystemWatcherEngine::run (this=0x8addec8) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x04d5eda2 in QThreadPrivate::start (arg=0x8addec8) at thread/qthread_unix.cpp:320
#10 0x06aa4e99 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#11 0x007a473e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 3 (Thread 0xad037b70 (LWP 1695)):
#0  0x006eac72 in ?? () from /lib/i386-linux-gnu/libc.so.6
#1  0x007b262b in pthread_mutex_unlock () from /lib/i386-linux-gnu/libc.so.6
#2  0x02a50fc2 in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x02a51e63 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0x02a52524 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0x04e80577 in QEventDispatcherGlib::processEvents (this=0x8bf0d68, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#6  0x04e52289 in QEventLoop::processEvents (this=0xad037280, flags=...) at kernel/qeventloop.cpp:149
#7  0x04e52522 in QEventLoop::exec (this=0xad037280, flags=...) at kernel/qeventloop.cpp:201
#8  0x04d5c2a0 in QThread::exec (this=0x8bd5218) at thread/qthread.cpp:492
#9  0x04e33fdb in QInotifyFileSystemWatcherEngine::run (this=0x8bd5218) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x04d5eda2 in QThreadPrivate::start (arg=0x8bd5218) at thread/qthread_unix.cpp:320
#11 0x06aa4e99 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#12 0x007a473e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 2 (Thread 0xac035b70 (LWP 1700)):
#0  0x02a5059b in g_main_context_acquire () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0x02a51dde in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0x02a5292b in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x04ac9304 in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#4  0x02a7b2df in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0x06aa4e99 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#6  0x007a473e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 1 (Thread 0xb60a3940 (LWP 1692)):
[KCrash Handler]
#7  0x010b0452 in QString (this=0x17, group=0, state=0) at /usr/include/qt4/QtCore/qstring.h:728
#8  KIconEffect::fingerprint (this=0x17, group=0, state=0) at ../../kdeui/icons/kiconeffect.cpp:169
#9  0x010b6352 in KIconLoaderPrivate::makeCacheKey (this=0x3, name=..., group=KIconLoader::Desktop, overlays=..., size=24, state=0) at ../../kdeui/icons/kiconloader.cpp:782
#10 0x010bd398 in KIconLoader::loadIcon (this=0x95aa058, _name=..., group=KIconLoader::Desktop, size=24, state=0, overlays=..., path_store=0x0, canReturnNull=false) at ../../kdeui/icons/kiconloader.cpp:1226
#11 0x010b4d76 in KIconEngine::pixmap (this=0x98ba818, size=..., mode=QIcon::Normal, state=QIcon::Off) at ../../kdeui/icons/kiconengine.cpp:93
#12 0x031e8ca2 in QIcon::pixmap (this=0x963b5d4, size=..., mode=QIcon::Normal, state=QIcon::Off) at image/qicon.cpp:676
#13 0x002aa969 in Plasma::IconWidgetPrivate::decoration (this=0x963b530, option=0x889bcb0, useHoverEffect=false, usePressedEffect=false) at ../../plasma/widgets/iconwidget.cpp:812
#14 0x002b121d in Plasma::IconWidget::paint (this=0x90b69e0, painter=0xbfbf268c, option=0x889bcb0, widget=0x0) at ../../plasma/widgets/iconwidget.cpp:1128
#15 0x045c70dd in SystemTray::DBusSystemTrayWidget::paint (this=0x90b69e0, painter=0xbfbf268c, option=0x889bcb0, widget=0x0) at ../../../../../plasma/generic/applets/systemtray/protocols/dbussystemtray/dbussystemtraywidget.cpp:189
#16 0x037919ec in _q_paintItem (item=<value optimized out>, painter=0xbfbf268c, option=0x889bcb0, widget=0x0, useWindowOpacity=false, painterStateProtection=true) at graphicsview/qgraphicsscene.cpp:4314
#17 0x03791cf2 in _q_paintIntoCache (pix=0xbfbf2b5c, item=0x90b69e8, pixmapExposed=..., itemToPixmap=..., renderHints=..., option=0x889bcb0, painterStateProtection=true) at graphicsview/qgraphicsscene.cpp:4352
#18 0x037a5a00 in QGraphicsScenePrivate::drawItemHelper (this=0x889bb60, item=0x90b69e8, painter=0xbfbf4344, option=0x889bcb0, widget=0x91996a8, painterStateProtection=true) at graphicsview/qgraphicsscene.cpp:4690
#19 0x037a66c2 in QGraphicsScenePrivate::draw (this=0x889bb60, item=0x90b69e8, painter=0xbfbf4344, viewTransform=0xbfbf412c, transformPtr=0xbfbf2f40, exposedRegion=0x8aa7190, widget=0x91996a8, opacity=1, effectTransform=0x0, wasDirtyParentSceneTransform=false, drawItem=true) at graphicsview/qgraphicsscene.cpp:4962
#20 0x037a7402 in QGraphicsScenePrivate::drawSubtreeRecursive (this=0x889bb60, item=0x90b69e8, painter=0xbfbf4344, viewTransform=0xbfbf412c, exposedRegion=0x8aa7190, widget=0x91996a8, parentOpacity=1, effectTransform=0x0) at graphicsview/qgraphicsscene.cpp:4853
#21 0x037a64ec in QGraphicsScenePrivate::draw (this=0x889bb60, item=0x89ce018, painter=0xbfbf4344, viewTransform=0xbfbf412c, transformPtr=0xbfbf33e0, exposedRegion=0x8aa7190, widget=0x91996a8, opacity=1, effectTransform=0x0, wasDirtyParentSceneTransform=false, drawItem=true) at graphicsview/qgraphicsscene.cpp:4979
#22 0x037a7402 in QGraphicsScenePrivate::drawSubtreeRecursive (this=0x889bb60, item=0x89ce018, painter=0xbfbf4344, viewTransform=0xbfbf412c, exposedRegion=0x8aa7190, widget=0x91996a8, parentOpacity=1, effectTransform=0x0) at graphicsview/qgraphicsscene.cpp:4853
#23 0x037a64ec in QGraphicsScenePrivate::draw (this=0x889bb60, item=0x89cf9e0, painter=0xbfbf4344, viewTransform=0xbfbf412c, transformPtr=0xbfbf3880, exposedRegion=0x8aa7190, widget=0x91996a8, opacity=1, effectTransform=0x0, wasDirtyParentSceneTransform=false, drawItem=true) at graphicsview/qgraphicsscene.cpp:4979
#24 0x037a7402 in QGraphicsScenePrivate::drawSubtreeRecursive (this=0x889bb60, item=0x89cf9e0, painter=0xbfbf4344, viewTransform=0xbfbf412c, exposedRegion=0x8aa7190, widget=0x91996a8, parentOpacity=1, effectTransform=0x0) at graphicsview/qgraphicsscene.cpp:4853
#25 0x037a64ec in QGraphicsScenePrivate::draw (this=0x889bb60, item=0x8913c88, painter=0xbfbf4344, viewTransform=0xbfbf412c, transformPtr=0xbfbf3d20, exposedRegion=0x8aa7190, widget=0x91996a8, opacity=1, effectTransform=0x0, wasDirtyParentSceneTransform=false, drawItem=true) at graphicsview/qgraphicsscene.cpp:4979
#26 0x037a7402 in QGraphicsScenePrivate::drawSubtreeRecursive (this=0x889bb60, item=0x8913c88, painter=0xbfbf4344, viewTransform=0xbfbf412c, exposedRegion=0x8aa7190, widget=0x91996a8, parentOpacity=1, effectTransform=0x0) at graphicsview/qgraphicsscene.cpp:4853
#27 0x037a7c06 in QGraphicsScenePrivate::drawItems (this=0x889bb60, painter=0xbfbf4344, viewTransform=0xbfbf412c, exposedRegion=0x8aa7190, widget=0x91996a8) at graphicsview/qgraphicsscene.cpp:4735
#28 0x037c6ea1 in QGraphicsView::paintEvent (this=0x8f7f018, event=0xbfbf4a54) at graphicsview/qgraphicsview.cpp:3469
#29 0x00efb484 in PanelView::paintEvent (this=0x8f7f018, event=0xbfbf4a54) at ../../../../plasma/desktop/shell/panelview.cpp:1593
#30 0x0318b18e in QWidget::event (this=0x8f7f018, event=0xbfbf4a54) at kernel/qwidget.cpp:8405
#31 0x0357cf63 in QFrame::event (this=0x8f7f018, e=0xbfbf4a54) at widgets/qframe.cpp:557
#32 0x0360b5d2 in QAbstractScrollArea::viewportEvent (this=0x8f7f018, e=0xbfbf4a54) at widgets/qabstractscrollarea.cpp:1043
#33 0x037c836f in QGraphicsView::viewportEvent (this=0x8f7f018, event=0xbfbf4a54) at graphicsview/qgraphicsview.cpp:2864
#34 0x0360ded5 in viewportEvent (this=0x8b71418, o=0x91996a8, e=0xbfbf4a54) at widgets/qabstractscrollarea_p.h:100
#35 QAbstractScrollAreaFilter::eventFilter (this=0x8b71418, o=0x91996a8, e=0xbfbf4a54) at widgets/qabstractscrollarea_p.h:116
#36 0x04e5325a in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x87f7698, receiver=0x91996a8, event=0xbfbf4a54) at kernel/qcoreapplication.cpp:846
#37 0x03132d00 in QApplicationPrivate::notify_helper (this=0x87f7698, receiver=0x91996a8, e=0xbfbf4a54) at kernel/qapplication.cpp:4458
#38 0x0313797b in QApplication::notify (this=0x87ec590, receiver=0x91996a8, e=0xbfbf4a54) at kernel/qapplication.cpp:4427
#39 0x0110f3ca in KApplication::notify (this=0x87ec590, receiver=0x91996a8, event=0xbfbf4a54) at ../../kdeui/kernel/kapplication.cpp:311
#40 0x04e530bb in QCoreApplication::notifyInternal (this=0x87ec590, receiver=0x91996a8, event=0xbfbf4a54) at kernel/qcoreapplication.cpp:731
#41 0x03187f0c in sendSpontaneousEvent (this=0x8c43a88, pdev=0x9147804, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x8f5a7b8) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#42 QWidgetPrivate::drawWidget (this=0x8c43a88, pdev=0x9147804, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x8f5a7b8) at kernel/qwidget.cpp:5492
#43 0x03188b7c in QWidgetPrivate::paintSiblingsRecursive (this=0x8aa6e40, pdev=0x9147804, siblings=..., index=<value optimized out>, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x8f5a7b8) at kernel/qwidget.cpp:5699
#44 0x03187c80 in QWidgetPrivate::drawWidget (this=0x8aa6e40, pdev=0x9147804, rgn=..., offset=..., flags=5, sharedPainter=0x0, backingStore=0x8f5a7b8) at kernel/qwidget.cpp:5545
#45 0x03363908 in QWidgetBackingStore::sync (this=0x8f5a7b8) at painting/qbackingstore.cpp:1333
#46 0x0317d843 in QWidgetPrivate::syncBackingStore (this=0x8aa6e40) at kernel/qwidget.cpp:1842
#47 0x0318b7e5 in QWidget::event (this=0x8f7f018, event=0x8aa8250) at kernel/qwidget.cpp:8552
#48 0x0357cf63 in QFrame::event (this=0x8f7f018, e=0x8aa8250) at widgets/qframe.cpp:557
#49 0x0360d33f in QAbstractScrollArea::event (this=0x8f7f018, e=0x8aa8250) at widgets/qabstractscrollarea.cpp:996
#50 0x037bb686 in QGraphicsView::event (this=0x8f7f018, event=0x8aa8250) at graphicsview/qgraphicsview.cpp:2741
#51 0x00efb7c3 in PanelView::event (this=0x8f7f018, event=0x8aa8250) at ../../../../plasma/desktop/shell/panelview.cpp:1604
#52 0x03132d24 in QApplicationPrivate::notify_helper (this=0x87f7698, receiver=0x8f7f018, e=0x8aa8250) at kernel/qapplication.cpp:4462
#53 0x0313797b in QApplication::notify (this=0x87ec590, receiver=0x8f7f018, e=0x8aa8250) at kernel/qapplication.cpp:4427
#54 0x0110f3ca in KApplication::notify (this=0x87ec590, receiver=0x8f7f018, event=0x8aa8250) at ../../kdeui/kernel/kapplication.cpp:311
#55 0x04e530bb in QCoreApplication::notifyInternal (this=0x87ec590, receiver=0x8f7f018, event=0x8aa8250) at kernel/qcoreapplication.cpp:731
#56 0x04e56c79 in sendEvent (receiver=0x8f7f018, event_type=77, data=0x8782f50) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#57 QCoreApplicationPrivate::sendPostedEvents (receiver=0x8f7f018, event_type=77, data=0x8782f50) at kernel/qcoreapplication.cpp:1372
#58 0x04e56e0d in QCoreApplication::sendPostedEvents (receiver=0x8f7f018, event_type=77) at kernel/qcoreapplication.cpp:1265
#59 0x0379e1b6 in dispatchPendingUpdateRequests (this=0x889bb60) at ../../include/QtGui/private/../../../src/gui/graphicsview/qgraphicsview_p.h:189
#60 QGraphicsScenePrivate::_q_processDirtyItems (this=0x889bb60) at graphicsview/qgraphicsscene.cpp:510
#61 0x0379e596 in QGraphicsScene::qt_metacall (this=0x87f5658, _c=QMetaObject::InvokeMetaMethod, _id=14, _a=0x98cc758) at .moc/release-shared/moc_qgraphicsscene.cpp:130
#62 0x001eda9a in Plasma::Corona::qt_metacall (this=0x87f5658, _c=QMetaObject::InvokeMetaMethod, _id=18, _a=0x98cc758) at ./corona.moc:109
#63 0x00eee20a in DesktopCorona::qt_metacall (this=0x87f5658, _c=QMetaObject::InvokeMetaMethod, _id=18, _a=0x98cc758) at ./desktopcorona.moc:101
#64 0x04e596ba in QMetaObject::metacall (object=0x87f5658, cl=QMetaObject::InvokeMetaMethod, idx=18, argv=0x98cc758) at kernel/qmetaobject.cpp:237
#65 0x04e63e16 in QMetaCallEvent::placeMetaCall (this=0x9961708, object=0x87f5658) at kernel/qobject.cpp:535
#66 0x04e683b7 in QObject::event (this=0x87f5658, e=0x9961708) at kernel/qobject.cpp:1226
#67 0x037ab3b4 in QGraphicsScene::event (this=0x87f5658, event=0x9961708) at graphicsview/qgraphicsscene.cpp:3544
#68 0x03132d24 in QApplicationPrivate::notify_helper (this=0x87f7698, receiver=0x87f5658, e=0x9961708) at kernel/qapplication.cpp:4462
#69 0x031378ce in QApplication::notify (this=0x87ec590, receiver=0x87f5658, e=0x9961708) at kernel/qapplication.cpp:3862
#70 0x0110f3ca in KApplication::notify (this=0x87ec590, receiver=0x87f5658, event=0x9961708) at ../../kdeui/kernel/kapplication.cpp:311
#71 0x04e530bb in QCoreApplication::notifyInternal (this=0x87ec590, receiver=0x87f5658, event=0x9961708) at kernel/qcoreapplication.cpp:731
#72 0x04e56c79 in sendEvent (receiver=0x0, event_type=0, data=0x8782f50) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#73 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x8782f50) at kernel/qcoreapplication.cpp:1372
#74 0x04e56e0d in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1265
#75 0x04e803c4 in sendPostedEvents (s=0x87f72d8) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#76 postEventSourceDispatch (s=0x87f72d8) at kernel/qeventdispatcher_glib.cpp:277
#77 0x02a51aa8 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#78 0x02a52270 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#79 0x02a52524 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#80 0x04e8053c in QEventDispatcherGlib::processEvents (this=0x8782aa8, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#81 0x031e6775 in QGuiEventDispatcherGlib::processEvents (this=0x8782aa8, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#82 0x04e52289 in QEventLoop::processEvents (this=0xbfbf6244, flags=...) at kernel/qeventloop.cpp:149
#83 0x04e52522 in QEventLoop::exec (this=0xbfbf6244, flags=...) at kernel/qeventloop.cpp:201
#84 0x04e56ecc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#85 0x031308e7 in QApplication::exec () at kernel/qapplication.cpp:3736
#86 0x00ef55a5 in kdemain (argc=1, argv=0xbfbf6454) at ../../../../plasma/desktop/shell/main.cpp:118
#87 0x080485cb in main (argc=1, argv=0xbfbf6454) at plasma-desktop_dummy.cpp:3

This bug may be a duplicate of or related to bug 258706.

Possible duplicates by query: bug 274934, bug 274932, bug 274898, bug 274864, bug 274830.

Reported using DrKonqi