Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.2 (4.7.2)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-12-generic-pae i686
Distribution: Ubuntu 11.10

-- Information about the crash:
there are a problem at shut down

The crash can be reproduced some of the time.

-- Backtrace:
Application: Outil de gestion de fenêtres Plasma (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb060a720 (LWP 1930))]

Thread 4 (Thread 0xa9482b70 (LWP 1931)):
#0  0xb30a3d29 in __pthread_mutex_unlock_usercnt () from /lib/i386-linux-gnu/libpthread.so.0
#1  0xb76bdf54 in pthread_mutex_unlock () from /lib/i386-linux-gnu/libc.so.6
#2  0xb2f86102 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb2f86990 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb2f86c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb64fdb37 in QEventDispatcherGlib::processEvents (this=0xa2e6050, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#6  0xb64ce1dd in QEventLoop::processEvents (this=0xa94821f0, flags=...) at kernel/qeventloop.cpp:149
#7  0xb64ce421 in QEventLoop::exec (this=0xa94821f0, flags=...) at kernel/qeventloop.cpp:201
#8  0xb63d190b in QThread::exec (this=0xa2e30c0) at thread/qthread.cpp:498
#9  0xb64aee2d in QInotifyFileSystemWatcherEngine::run (this=0xa2e30c0) at io/qfilesystemwatcher_inotify.cpp:248
#10 0xb63d47b3 in QThreadPrivate::start (arg=0xa2e30c0) at thread/qthread_unix.cpp:331
#11 0xb26f09cd in ?? () from /usr/lib/nvidia-current-updates/libGL.so.1
#12 0xb76b00ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 3 (Thread 0xa798fb70 (LWP 1932)):
#0  0xb3040d10 in clock_gettime () from /lib/i386-linux-gnu/librt.so.1
#1  0xb642b7d5 in do_gettime (frac=0xa798ef60, sec=0xa798ef58) at tools/qelapsedtimer_unix.cpp:123
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#3  0xb64fe4b6 in QTimerInfoList::updateCurrentTime (this=0xa447ab4) at kernel/qeventdispatcher_unix.cpp:339
#4  0xb64fe80a in QTimerInfoList::timerWait (this=0xa447ab4, tm=...) at kernel/qeventdispatcher_unix.cpp:442
#5  0xb64fd053 in timerSourcePrepareHelper (src=<optimized out>, timeout=0xa798f06c) at kernel/qeventdispatcher_glib.cpp:136
#6  0xb64fd0ed in timerSourcePrepare (source=0xa447a80, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#7  0xb2f8588c in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#8  0xb2f86637 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0xb2f86c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0xb64fdb37 in QEventDispatcherGlib::processEvents (this=0xa446590, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#11 0xb64ce1dd in QEventLoop::processEvents (this=0xa798f1f0, flags=...) at kernel/qeventloop.cpp:149
#12 0xb64ce421 in QEventLoop::exec (this=0xa798f1f0, flags=...) at kernel/qeventloop.cpp:201
#13 0xb63d190b in QThread::exec (this=0x9c56838) at thread/qthread.cpp:498
#14 0xb64aee2d in QInotifyFileSystemWatcherEngine::run (this=0x9c56838) at io/qfilesystemwatcher_inotify.cpp:248
#15 0xb63d47b3 in QThreadPrivate::start (arg=0x9c56838) at thread/qthread_unix.cpp:331
#16 0xb26f09cd in ?? () from /usr/lib/nvidia-current-updates/libGL.so.1
#17 0xb76b00ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 2 (Thread 0xa5f3db70 (LWP 1941)):
#0  0xb77ef424 in __kernel_vsyscall ()
#1  0xb76a140e in poll () from /lib/i386-linux-gnu/libc.so.6
#2  0xb2f9534b in g_poll () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb2f86896 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb2f86f9b in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xa681dcea in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#6  0xb2fad5f4 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#7  0xb26f09cd in ?? () from /usr/lib/nvidia-current-updates/libGL.so.1
#8  0xb76b00ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 1 (Thread 0xb060a720 (LWP 1930)):
[KCrash Handler]
#7  0x0000001a in ?? ()
#8  0xaf0b796f in TaskGroupItem::~TaskGroupItem (this=0xae2ca48, __in_chrg=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:82
#9  0xaf0b7a42 in TaskGroupItem::~TaskGroupItem (this=0xae2ca48, __in_chrg=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:83
#10 0xb64e25f3 in qDeleteInEventHandler (o=0xae2ca48) at kernel/qobject.cpp:3986
#11 0xb64e7b80 in QObject::event (this=0xae2ca48, e=0xb15cc98) at kernel/qobject.cpp:1200
#12 0xb60b9bd4 in QGraphicsWidget::event (this=0xae2ca48, event=0xb15cc98) at graphicsview/qgraphicswidget.cpp:1455
#13 0xb59fad54 in notify_helper (e=0xb15cc98, receiver=0xae2ca48, this=0x9b0b010) at kernel/qapplication.cpp:4486
#14 QApplicationPrivate::notify_helper (this=0x9b0b010, receiver=0xae2ca48, e=0xb15cc98) at kernel/qapplication.cpp:4458
#15 0xb5a00103 in QApplication::notify (this=0xb15cc98, receiver=0xae2ca48, e=0xb15cc98) at kernel/qapplication.cpp:3886
#16 0xb6b34681 in KApplication::notify (this=0x9af4048, receiver=0xae2ca48, event=0xb15cc98) at ../../kdeui/kernel/kapplication.cpp:311
#17 0xb64cf19e in QCoreApplication::notifyInternal (this=0x9af4048, receiver=0xae2ca48, event=0xb15cc98) at kernel/qcoreapplication.cpp:787
#18 0xb64d2f93 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#19 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=52, data=0x9a752e0) at kernel/qcoreapplication.cpp:1428
#20 0xb64d30ec in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=52) at kernel/qcoreapplication.cpp:1321
#21 0xb64d31d3 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1071
#22 0xb59f88f4 in QApplication::exec () at kernel/qapplication.cpp:3760
#23 0xb77a418b in kdemain (argc=1, argv=0xbfca2ac4) at ../../../../plasma/desktop/shell/main.cpp:120
#24 0x0804850b in main (argc=1, argv=0xbfca2ac4) at plasma-desktop_dummy.cpp:3

Possible duplicates by query: bug 286027, bug 285724, bug 285717, bug 285045, bug 283724.

Reported using DrKonqi