Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.00 (KDE 4.3.0) "release 152"
Qt Version: 4.5.2
Operating System: Linux 2.6.27.29-0.1-default x86_64
Distribution: "openSUSE 11.1 (x86_64)"

What I was doing when the application crashed:
desktop disappears for a second, then comes back

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f71a8d33750 (LWP 3741))]

Thread 2 (Thread 0x7f7187e56950 (LWP 3743)):
#0  0x00007f71a8519d59 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f71a878ae19 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQtCore.so.4
#2  0x00007f71a73be87c in ?? () from /usr/lib64/libQtNetwork.so.4
#3  0x00007f71a8789e65 in ?? () from /usr/lib64/libQtCore.so.4
#4  0x00007f71a8516070 in start_thread () from /lib64/libpthread.so.0
#5  0x00007f71a507310d in clone () from /lib64/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f71a8d33750 (LWP 3741)):
[KCrash Handler]
#5  0x00007f7189c6fd9f in ?? () from /usr/lib64/kde4/plasma_applet_tasks.so
#6  0x00007f7189c6c316 in ?? () from /usr/lib64/kde4/plasma_applet_tasks.so
#7  0x00007f7189c6cc6c in ?? () from /usr/lib64/kde4/plasma_applet_tasks.so
#8  0x00007f7189c6ccfb in ?? () from /usr/lib64/kde4/plasma_applet_tasks.so
#9  0x00007f7189c6d8b4 in ?? () from /usr/lib64/kde4/plasma_applet_tasks.so
#10 0x00007f7189c6da90 in ?? () from /usr/lib64/kde4/plasma_applet_tasks.so
#11 0x00007f7189c79528 in ?? () from /usr/lib64/kde4/plasma_applet_tasks.so
#12 0x00007f7189c79b2c in ?? () from /usr/lib64/kde4/plasma_applet_tasks.so
#13 0x00007f71a88886e2 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQtCore.so.4
#14 0x00007f7189a3df4f in TaskManager::TaskGroup::itemAdded(TaskManager::AbstractGroupableItem*) () from /usr/lib64/libtaskmanager.so.4
#15 0x00007f7189a3ea9b in TaskManager::TaskGroup::add(TaskManager::AbstractGroupableItem*) () from /usr/lib64/libtaskmanager.so.4
#16 0x00007f7189a24e00 in TaskManager::AbstractGroupingStrategy::closeGroup(TaskManager::TaskGroup*) () from /usr/lib64/libtaskmanager.so.4
#17 0x00007f7189a2c1c8 in ?? () from /usr/lib64/libtaskmanager.so.4
#18 0x00007f7189a2d04d in ?? () from /usr/lib64/libtaskmanager.so.4
#19 0x00007f71a88886e2 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQtCore.so.4
#20 0x00007f7189a3df12 in TaskManager::TaskGroup::itemRemoved(TaskManager::AbstractGroupableItem*) () from /usr/lib64/libtaskmanager.so.4
#21 0x00007f7189a3e821 in TaskManager::TaskGroup::remove(TaskManager::AbstractGroupableItem*) () from /usr/lib64/libtaskmanager.so.4
#22 0x00007f7189a27ca4 in ?? () from /usr/lib64/libtaskmanager.so.4
#23 0x00007f7189a2950d in TaskManager::GroupManager::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib64/libtaskmanager.so.4
#24 0x00007f71a88886e2 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQtCore.so.4
#25 0x00007f7189a413b5 in TaskManager::TaskManager::taskRemoved(KSharedPtr<TaskManager::Task>) () from /usr/lib64/libtaskmanager.so.4
#26 0x00007f7189a429fe in TaskManager::TaskManager::windowRemoved(unsigned long) () from /usr/lib64/libtaskmanager.so.4
#27 0x00007f7189a4474f in TaskManager::TaskManager::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib64/libtaskmanager.so.4
#28 0x00007f71a88886e2 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQtCore.so.4
#29 0x00007f71a6e28cf2 in KWindowSystem::windowRemoved(unsigned long) () from /usr/lib64/libkdeui.so.5
#30 0x00007f71a6e2b1eb in ?? () from /usr/lib64/libkdeui.so.5
#31 0x00007f71a6e39827 in NETRootInfo::update(unsigned long const*) () from /usr/lib64/libkdeui.so.5
#32 0x00007f71a6e3a56b in NETRootInfo::event(_XEvent*, unsigned long*, int) () from /usr/lib64/libkdeui.so.5
#33 0x00007f71a6e2b4bb in ?? () from /usr/lib64/libkdeui.so.5
#34 0x00007f71a6cfbb33 in KApplication::x11EventFilter(_XEvent*) () from /usr/lib64/libkdeui.so.5
#35 0x00007f719c1b62b7 in ?? () from /usr/lib64/libkdeinit4_plasma-desktop.so
#36 0x00007f71a5c6dd7f in ?? () from /usr/lib64/libQtGui.so.4
#37 0x00007f71a5c8126e in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib64/libQtGui.so.4
#38 0x00007f71a5ca9864 in ?? () from /usr/lib64/libQtGui.so.4
#39 0x00007f71a46f10fb in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#40 0x00007f71a46f48cd in ?? () from /usr/lib64/libglib-2.0.so.0
#41 0x00007f71a46f4a8b in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#42 0x00007f71a889cd3f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#43 0x00007f71a5ca8fef in ?? () from /usr/lib64/libQtGui.so.4
#44 0x00007f71a88721d2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#45 0x00007f71a88725a4 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#46 0x00007f71a8874894 in QCoreApplication::exec() () from /usr/lib64/libQtCore.so.4
#47 0x00007f719c1a2c0b in kdemain () from /usr/lib64/libkdeinit4_plasma-desktop.so
#48 0x0000000000407495 in _start ()

Reported using DrKonqi