Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.2 (4.7.2) "release 5"
Qt Version: 4.7.4
Operating System: Linux 3.1.10-1.16-desktop x86_64
Distribution: "openSUSE 12.1 (x86_64)"

-- Information about the crash:
- What I was doing when the application crashed:
Shutting down KDE by selecting logout option.

- Unusual behavior I noticed:
Many ghost entries from previously closed programs remain visible on the taskbar. Clicking on the ghosts yields no result and the will not go away unless I log off.

The crash can be reproduced some of the time.

-- Backtrace:
Application: Plasma Desktop Shell (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7feac10a1760 (LWP 7846))]

Thread 4 (Thread 0x7fea9d61b700 (LWP 7876)):
#0  0x00007fffb7cc38de in ?? ()
#1  0x00007feabb7b2d9a in clock_gettime () from /lib64/librt.so.1
#2  0x00007feabfc5b114 in ?? () from /usr/lib64/libQtCore.so.4
#3  0x00007feabfd1cd2d in ?? () from /usr/lib64/libQtCore.so.4
#4  0x00007feabfd1d063 in ?? () from /usr/lib64/libQtCore.so.4
#5  0x00007feabfd1bacc in ?? () from /usr/lib64/libQtCore.so.4
#6  0x00007feabfd1bb75 in ?? () from /usr/lib64/libQtCore.so.4
#7  0x00007feabb4fdb72 in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#8  0x00007feabb4fe97d in ?? () from /usr/lib64/libglib-2.0.so.0
#9  0x00007feabb4fefa9 in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#10 0x00007feabfd1c586 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#11 0x00007feabfcf0a32 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#12 0x00007feabfcf0c2f in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#13 0x00007feabfc085df in QThread::exec() () from /usr/lib64/libQtCore.so.4
#14 0x00007feabfcd3aff in ?? () from /usr/lib64/libQtCore.so.4
#15 0x00007feabfc0b025 in ?? () from /usr/lib64/libQtCore.so.4
#16 0x00007feabf97af05 in start_thread () from /lib64/libpthread.so.0
#17 0x00007feabe71410d in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7fea973e0700 (LWP 7882)):
#0  0x00007feabf97ee6c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007feab5c6c9dc in ?? () from /usr/lib64/libQtWebKit.so.4
#2  0x00007feab5c6cb09 in ?? () from /usr/lib64/libQtWebKit.so.4
#3  0x00007feabf97af05 in start_thread () from /lib64/libpthread.so.0
#4  0x00007feabe71410d in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7fea96adf700 (LWP 7883)):
#0  0x00007feabb4fdabf in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#1  0x00007feabb4fe97d in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007feabb4fefa9 in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007feabfd1c586 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#4  0x00007feabfcf0a32 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#5  0x00007feabfcf0c2f in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#6  0x00007feabfc085df in QThread::exec() () from /usr/lib64/libQtCore.so.4
#7  0x00007feabfc0b025 in ?? () from /usr/lib64/libQtCore.so.4
#8  0x00007feabf97af05 in start_thread () from /lib64/libpthread.so.0
#9  0x00007feabe71410d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7feac10a1760 (LWP 7846)):
[KCrash Handler]
#6  0x000000000000001e in ?? ()
#7  0x00007feaa570ccc6 in TaskGroupItem::~TaskGroupItem (this=0x20a0ae0, __in_chrg=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/plasma/desktop/applets/tasks/taskgroupitem.cpp:82
#8  0x00007feaa570cd79 in TaskGroupItem::~TaskGroupItem (this=0x20a0ae0, __in_chrg=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/plasma/desktop/applets/tasks/taskgroupitem.cpp:83
#9  0x00007feabfd08188 in QObject::event(QEvent*) () from /usr/lib64/libQtCore.so.4
#10 0x00007feabf4bd38b in QGraphicsWidget::event(QEvent*) () from /usr/lib64/libQtGui.so.4
#11 0x00007feabeea3c34 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#12 0x00007feabeea8ac1 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#13 0x00007feac0a83e36 in KApplication::notify(QObject*, QEvent*) () from /usr/lib64/libkdeui.so.5
#14 0x00007feabfcf182c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQtCore.so.4
#15 0x00007feabfcf4c08 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib64/libQtCore.so.4
#16 0x00007feabfcf4e2e in QCoreApplication::exec() () from /usr/lib64/libQtCore.so.4
#17 0x00007feaadf4a773 in kdemain (argc=1, argv=0x6772b0) at /usr/src/debug/kde-workspace-4.7.2/plasma/desktop/shell/main.cpp:120
#18 0x0000000000408897 in _start ()

This bug may be a duplicate of or related to bug 275286.

Possible duplicates by query: bug 311536, bug 309805, bug 309487, bug 309240, bug 305848.

Reported using DrKonqi