Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.3
Operating System: Linux 2.6.31-tuxonice x86_64

What I was doing when the application crashed:
well, I have no idea what happened and what caused it, it just crashed.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f58e0a49750 (LWP 7930))]

Thread 2 (Thread 0x7f58c397f910 (LWP 7936)):
#0  0x00007f58e0267279 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f58e04d446b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/qt4/libQtCore.so.4
#2  0x00007f58df0ff664 in ?? () from /usr/lib64/qt4/libQtNetwork.so.4
#3  0x00007f58e04d3693 in ?? () from /usr/lib64/qt4/libQtCore.so.4
#4  0x00007f58e02632e7 in start_thread () from /lib/libpthread.so.0
#5  0x00007f58dce8d7ad in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f58e0a49750 (LWP 7930)):
[KCrash Handler]
#5  0x00007f58c849dbe9 in ?? () from /usr/lib64/kde4/plasma_applet_tasks.so
#6  0x00007f58c849e33e in ?? () from /usr/lib64/kde4/plasma_applet_tasks.so
#7  0x00007f58c849e500 in ?? () from /usr/lib64/kde4/plasma_applet_tasks.so
#8  0x00007f58c84aa218 in ?? () from /usr/lib64/kde4/plasma_applet_tasks.so
#9  0x00007f58c84aa894 in ?? () from /usr/lib64/kde4/plasma_applet_tasks.so
#10 0x00007f58e05b7fe4 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/qt4/libQtCore.so.4
#11 0x00007f58c826df4f in TaskManager::TaskGroup::itemAdded(TaskManager::AbstractGroupableItem*) () from /usr/lib64/libtaskmanager.so.4
#12 0x00007f58c826e83f in TaskManager::TaskGroup::add(TaskManager::AbstractGroupableItem*) () from /usr/lib64/libtaskmanager.so.4
#13 0x00007f58c8255a6d in TaskManager::AbstractGroupingStrategy::closeGroup(TaskManager::TaskGroup*) () from /usr/lib64/libtaskmanager.so.4
#14 0x00007f58c825cbbf in ?? () from /usr/lib64/libtaskmanager.so.4
#15 0x00007f58c825db4c in ?? () from /usr/lib64/libtaskmanager.so.4
#16 0x00007f58e05b7fe4 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/qt4/libQtCore.so.4
#17 0x00007f58c826df12 in TaskManager::TaskGroup::itemRemoved(TaskManager::AbstractGroupableItem*) () from /usr/lib64/libtaskmanager.so.4
#18 0x00007f58c826e5f1 in TaskManager::TaskGroup::remove(TaskManager::AbstractGroupableItem*) () from /usr/lib64/libtaskmanager.so.4
#19 0x00007f58c82586db in ?? () from /usr/lib64/libtaskmanager.so.4
#20 0x00007f58c825a39a in TaskManager::GroupManager::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib64/libtaskmanager.so.4
#21 0x00007f58e05b7fe4 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/qt4/libQtCore.so.4
#22 0x00007f58c8271435 in TaskManager::TaskManager::taskRemoved(KSharedPtr<TaskManager::Task>) () from /usr/lib64/libtaskmanager.so.4
#23 0x00007f58c8272fec in TaskManager::TaskManager::windowRemoved(unsigned long) () from /usr/lib64/libtaskmanager.so.4
#24 0x00007f58c8274767 in TaskManager::TaskManager::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib64/libtaskmanager.so.4
#25 0x00007f58e05b7fe4 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/qt4/libQtCore.so.4
#26 0x00007f58deb7a562 in KWindowSystem::windowRemoved(unsigned long) () from /usr/lib64/libkdeui.so.5
#27 0x00007f58deb7d30b in ?? () from /usr/lib64/libkdeui.so.5
#28 0x00007f58deb8abec in NETRootInfo::update(unsigned long const*) () from /usr/lib64/libkdeui.so.5
#29 0x00007f58deb8b941 in NETRootInfo::event(_XEvent*, unsigned long*, int) () from /usr/lib64/libkdeui.so.5
#30 0x00007f58deb7d5bc in ?? () from /usr/lib64/libkdeui.so.5
#31 0x00007f58dea4e7b6 in KApplication::x11EventFilter(_XEvent*) () from /usr/lib64/libkdeui.so.5
#32 0x00007f58d4ad5504 in ?? () from /usr/lib64/libkdeinit4_plasma-desktop.so
#33 0x00007f58ddab08e1 in ?? () from /usr/lib64/qt4/libQtGui.so.4
#34 0x00007f58ddabdae4 in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#35 0x00007f58ddae3f14 in ?? () from /usr/lib64/qt4/libQtGui.so.4
#36 0x00007f58dc4efb2d in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#37 0x00007f58dc4f32d8 in ?? () from /usr/lib/libglib-2.0.so.0
#38 0x00007f58dc4f3400 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#39 0x00007f58e05cb006 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#40 0x00007f58ddae37ee in ?? () from /usr/lib64/qt4/libQtGui.so.4
#41 0x00007f58e05a5342 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#42 0x00007f58e05a54dd in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#43 0x00007f58e05a72c9 in QCoreApplication::exec() () from /usr/lib64/qt4/libQtCore.so.4
#44 0x00007f58d4ac22df in kdemain () from /usr/lib64/libkdeinit4_plasma-desktop.so
#45 0x0000000000407195 in _start ()

Reported using DrKonqi