Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.2.90 (KDE 4.2.90 (KDE 4.3 Beta2)) "release 139"
Qt Version: 4.5.1
Operating System: Linux 2.6.27.23-0.1-default x86_64

What I was doing when the application crashed:
Plasma seems to get slowly in an inconsistent states, with random icons diseapearing from the task bar. For example, the pager disapear, but is still functional (i.e. clicking at the location were it should show up indeed switches to the correct desktop).
Such state ends with a segfaut for plasma. This has been the case (at least) since 4.2, and no change has been noticed until now.

I just upgraded to the very last version 4.2.90 as of 11.06.2009, and the crash seems more frequent and just upfront after login.



 -- Backtrace:
Application: Plasma Workspace (kdeinit), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f18a0e3d750 (LWP 6087))]

Thread 2 (Thread 0x7f1882610950 (LWP 6090)):
#0  0x00007f18a0619d59 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f18a088aed9 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQtCore.so.4
#2  0x00007f189f4c25ec in ?? () from /usr/lib64/libQtNetwork.so.4
#3  0x00007f18a0889f22 in ?? () from /usr/lib64/libQtCore.so.4
#4  0x00007f18a0616070 in start_thread () from /lib64/libpthread.so.0
#5  0x00007f189d14c10d in clone () from /lib64/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f18a0e3d750 (LWP 6087)):
[KCrash Handler]
#5  0x00007f1884786a3c in TaskManager::AbstractGroupingStrategy::closeGroup (this=0x10d8d50, group=0xfad1f0)
    at /usr/src/debug/kdebase-workspace-4.2.90/libs/taskmanager/abstractgroupingstrategy.cpp:140
#6  0x00007f188478db48 in TaskManager::ProgramGroupingStrategy::checkGroup (this=0x10d8d50) at /usr/src/debug/kdebase-workspace-4.2.90/libs/taskmanager/strategies/programgroupingstrategy.cpp:193
#7  0x00007f188478e72d in TaskManager::ProgramGroupingStrategy::qt_metacall (this=0x10d8d50, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=<value optimized out>)
    at /usr/src/debug/kdebase-workspace-4.2.90/build/libs/taskmanager/programgroupingstrategy.moc:68
#8  0x00007f18a0988c22 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQtCore.so.4
#9  0x00007f188479f812 in TaskManager::TaskGroup::itemRemoved (this=0x615498, _t1=0x137fcc0) at /usr/src/debug/kdebase-workspace-4.2.90/build/libs/taskmanager/taskgroup.moc:143
#10 0x00007f18847891f2 in TaskManager::GroupManagerPrivate::removeTask (this=0x9ce570, task={d = 0x7fffa8e80ab0}) at /usr/src/debug/kdebase-workspace-4.2.90/libs/taskmanager/groupmanager.cpp:296
#11 0x00007f1884789cce in TaskManager::GroupManagerPrivate::reloadTasks (this=0x9ce570) at /usr/src/debug/kdebase-workspace-4.2.90/libs/taskmanager/groupmanager.cpp:151
#12 0x00007f188478b2c0 in TaskManager::GroupManager::qt_metacall (this=0xb0a780, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffa8e80c90)
    at /usr/src/debug/kdebase-workspace-4.2.90/build/libs/taskmanager/groupmanager.moc:95
#13 0x00007f18a0988c22 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQtCore.so.4
#14 0x00007f18847a29e1 in TaskManager::TaskManager::desktopChanged (this=0x615498, _t1=4) at /usr/src/debug/kdebase-workspace-4.2.90/build/libs/taskmanager/taskmanager.moc:180
#15 0x00007f18847a5e2e in TaskManager::TaskManager::qt_metacall (this=0x93a8b0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffa8e80e40)
    at /usr/src/debug/kdebase-workspace-4.2.90/build/libs/taskmanager/taskmanager.moc:111
#16 0x00007f18a0988c22 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQtCore.so.4
#17 0x00007f189ef2b9be in KWindowSystem::currentDesktopChanged(int) () from /usr/lib64/libkdeui.so.5
#18 0x00007f189ef2e2c3 in ?? () from /usr/lib64/libkdeui.so.5
#19 0x00007f189edfe463 in KApplication::x11EventFilter(_XEvent*) () from /usr/lib64/libkdeui.so.5
#20 0x00007f1895776047 in PlasmaApp::x11EventFilter (this=0x66d540, event=0x7fffa8e828a0) at /usr/src/debug/kdebase-workspace-4.2.90/plasma/shells/desktop/plasmaapp.cpp:444
#21 0x00007f189dd469af in ?? () from /usr/lib64/libQtGui.so.4
#22 0x00007f189dd59ea4 in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib64/libQtGui.so.4
#23 0x00007f189dd82384 in ?? () from /usr/lib64/libQtGui.so.4
#24 0x00007f189c7ca0fb in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#25 0x00007f189c7cd8cd in ?? () from /usr/lib64/libglib-2.0.so.0
#26 0x00007f189c7cda8b in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#27 0x00007f18a099c89f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#28 0x00007f189dd81b0f in ?? () from /usr/lib64/libQtGui.so.4
#29 0x00007f18a09719f2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#30 0x00007f18a0971dbd in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#31 0x00007f18a09740a4 in QCoreApplication::exec() () from /usr/lib64/libQtCore.so.4
#32 0x00007f1895762e7b in kdemain (argc=1, argv=0x614c30) at /usr/src/debug/kdebase-workspace-4.2.90/plasma/shells/desktop/main.cpp:50
#33 0x000000000040724e in _start ()

Reported using DrKonqi