Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.00 (KDE 4.3.0)
Qt Version: 4.5.2
Operating System: Linux 2.6.30-ARCH x86_64

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 4162)]

Thread 2 (Thread 0x7fa5190ac910 (LWP 4166)):
#0  0x00007fa537805dd9 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007fa537a7534b in QWaitCondition::wait () from /usr/lib/libQtCore.so.4
#2  0x00007fa533ee444c in ?? () from /usr/lib/libQtNetwork.so.4
#3  0x00007fa537a74285 in ?? () from /usr/lib/libQtCore.so.4
#4  0x00007fa53780157a in start_thread () from /lib/libpthread.so.0
#5  0x00007fa5351c016d in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fa538025750 (LWP 4162)):
[KCrash Handler]
#5  0x00007fa51b672b78 in AbstractTaskItem::basicPreferredSize () from /usr/lib/kde4/plasma_applet_tasks.so
#6  0x00007fa51b66ef65 in TaskItemLayout::preferredColumns () from /usr/lib/kde4/plasma_applet_tasks.so
#7  0x00007fa51b66fc4d in TaskItemLayout::gridLayoutSize () from /usr/lib/kde4/plasma_applet_tasks.so
#8  0x00007fa51b66fcdb in TaskItemLayout::layoutItems () from /usr/lib/kde4/plasma_applet_tasks.so
#9  0x00007fa51b67075f in TaskItemLayout::insert () from /usr/lib/kde4/plasma_applet_tasks.so
#10 0x00007fa51b670930 in TaskItemLayout::addTaskItem () from /usr/lib/kde4/plasma_applet_tasks.so
#11 0x00007fa51b67c628 in TaskGroupItem::itemAdded () from /usr/lib/kde4/plasma_applet_tasks.so
#12 0x00007fa51b67cc84 in TaskGroupItem::qt_metacall () from /usr/lib/kde4/plasma_applet_tasks.so
#13 0x00007fa537b6edec in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#14 0x00007fa51c11828f in TaskManager::TaskGroup::itemAdded () from /usr/lib/libtaskmanager.so.4
#15 0x00007fa51c118b7b in TaskManager::TaskGroup::add () from /usr/lib/libtaskmanager.so.4
#16 0x00007fa51c0ff915 in TaskManager::AbstractGroupingStrategy::closeGroup () from /usr/lib/libtaskmanager.so.4
#17 0x00007fa51c10690b in TaskManager::ProgramGroupingStrategy::checkGroup () from /usr/lib/libtaskmanager.so.4
#18 0x00007fa51c107545 in TaskManager::ProgramGroupingStrategy::qt_metacall () from /usr/lib/libtaskmanager.so.4
#19 0x00007fa537b6edec in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#20 0x00007fa51c118252 in TaskManager::TaskGroup::itemRemoved () from /usr/lib/libtaskmanager.so.4
#21 0x00007fa51c118931 in TaskManager::TaskGroup::remove () from /usr/lib/libtaskmanager.so.4
#22 0x00007fa51c1025ab in TaskManager::GroupManagerPrivate::removeTask () from /usr/lib/libtaskmanager.so.4
#23 0x00007fa51c10427a in TaskManager::GroupManager::qt_metacall () from /usr/lib/libtaskmanager.so.4
#24 0x00007fa537b6edec in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#25 0x00007fa51c11b6d5 in TaskManager::TaskManager::taskRemoved () from /usr/lib/libtaskmanager.so.4
#26 0x00007fa51c11d29d in TaskManager::TaskManager::windowRemoved () from /usr/lib/libtaskmanager.so.4
#27 0x00007fa51c11ea37 in TaskManager::TaskManager::qt_metacall () from /usr/lib/libtaskmanager.so.4
#28 0x00007fa537b6edec in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#29 0x00007fa536655842 in KWindowSystem::windowRemoved () from /usr/lib/libkdeui.so.5
#30 0x00007fa5366585da in KWindowSystemPrivate::removeClient () from /usr/lib/libkdeui.so.5
#31 0x00007fa53666601d in NETRootInfo::update () from /usr/lib/libkdeui.so.5
#32 0x00007fa536666d71 in NETRootInfo::event () from /usr/lib/libkdeui.so.5
#33 0x00007fa53665888c in KWindowSystemPrivate::x11Event () from /usr/lib/libkdeui.so.5
#34 0x00007fa5365294c6 in KApplication::x11EventFilter () from /usr/lib/libkdeui.so.5
#35 0x00007fa52c3c6594 in PlasmaApp::x11EventFilter () from /usr/lib/libkdeinit4_plasma-desktop.so
#36 0x00007fa535950a41 in ?? () from /usr/lib/libQtGui.so.4
#37 0x00007fa535961029 in QApplication::x11ProcessEvent () from /usr/lib/libQtGui.so.4
#38 0x00007fa535989e6c in ?? () from /usr/lib/libQtGui.so.4
#39 0x00007fa53484adbe in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#40 0x00007fa53484e568 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#41 0x00007fa53484e690 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#42 0x00007fa537b821b6 in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#43 0x00007fa53598964e in ?? () from /usr/lib/libQtGui.so.4
#44 0x00007fa537b585f2 in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#45 0x00007fa537b589c4 in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#46 0x00007fa537b5ab79 in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#47 0x00007fa52c3b31ff in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#48 0x0000000000406eae in _start ()

This bug may be a duplicate of or related to bug 205719

Reported using DrKonqi