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 2.6.31-5.slh.2-sidux-686 i686
Distribution: Debian GNU/Linux unstable (sid)

What I was doing when the application crashed:
This message occurs whenever I start a new KDE application like Kmail or Kwrite. 
See attached information from debug log.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb5723700 (LWP 3309))]

Thread 2 (Thread 0xa80f0b70 (LWP 3318)):
#0  0xb7717424 in __kernel_vsyscall ()
#1  0xb5e490b5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i686/cmov/libpthread.so.0
#2  0xb600f6fd in pthread_cond_wait () from /lib/i686/cmov/libc.so.6
#3  0xb75195c2 in QWaitConditionPrivate::wait (this=0x8ec53e0, mutex=0x8ec53dc, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  QWaitCondition::wait (this=0x8ec53e0, mutex=0x8ec53dc, time=4294967295) at thread/qwaitcondition_unix.cpp:159
#5  0xb5d5ca9a in QHostInfoAgent::run (this=0x8ec53d0) at kernel/qhostinfo.cpp:260
#6  0xb75185e2 in QThreadPrivate::start (arg=0x8ec53d0) at thread/qthread_unix.cpp:188
#7  0xb5e45595 in start_thread () from /lib/i686/cmov/libpthread.so.0
#8  0xb600218e in clone () from /lib/i686/cmov/libc.so.6

Thread 1 (Thread 0xb5723700 (LWP 3309)):
[KCrash Handler]
#6  0xb68f88dc in QGraphicsLayoutItem::geometry (this=0x89c23e8) at graphicsview/qgraphicslayoutitem.cpp:664
#7  0xb68fc77f in QGraphicsWidget::size (this=0x89c23d8) at graphicsview/qgraphicswidget.cpp:336
#8  0xa9346834 in AbstractTaskItem::basicPreferredSize (this=0x964df20) at ../../../../plasma/applets/tasks/abstracttaskitem.cpp:106
#9  0xa9342691 in TaskItemLayout::preferredColumns (this=0x8d13790) at ../../../../plasma/applets/tasks/taskitemlayout.cpp:206
#10 0xa934307d in TaskItemLayout::gridLayoutSize (this=0x8d13790) at ../../../../plasma/applets/tasks/taskitemlayout.cpp:222
#11 0xa934313b in TaskItemLayout::layoutItems (this=0x8d13790) at ../../../../plasma/applets/tasks/taskitemlayout.cpp:245
#12 0xa9343af4 in TaskItemLayout::remove (this=0x8d13790, item=0xd22c3c0) at ../../../../plasma/applets/tasks/taskitemlayout.cpp:136
#13 0xa9343bac in TaskItemLayout::removeTaskItem (this=0x8d13790, item=0xd22c3c0) at ../../../../plasma/applets/tasks/taskitemlayout.cpp:93
#14 0xa9350b8f in TaskGroupItem::itemPositionChanged (this=0x8d1b790, item=0xd251b98) at ../../../../plasma/applets/tasks/taskgroupitem.cpp:882
#15 0xa9350e39 in TaskGroupItem::qt_metacall (this=0x8d1b790, _c=QMetaObject::InvokeMetaMethod, _id=17, _a=0xbf8786ac) at ./taskgroupitem.moc:116
#16 0xb761e303 in QMetaObject::activate (sender=0x8cd73a0, from_signal_index=24, to_signal_index=24, argv=0xbf8786ac) at kernel/qobject.cpp:3112
#17 0xb761ef42 in QMetaObject::activate (sender=0x8cd73a0, m=0xa9317154, local_signal_index=3, argv=0xbf8786ac) at kernel/qobject.cpp:3186
#18 0xa9309743 in TaskManager::TaskGroup::itemPositionChanged (this=0x8cd73a0, _t1=0xd251b98) at ./taskgroup.moc:165
#19 0xa930bc33 in TaskManager::TaskGroup::moveItem (this=0x8cd73a0, oldIndex=3, newIndex=2) at ../../../libs/taskmanager/taskgroup.cpp:568
#20 0xa92efb06 in TaskManager::AbstractSortingStrategy::check (this=0x8ca5480, itemToCheck=0x0) at ../../../libs/taskmanager/abstractsortingstrategy.cpp:149
#21 0xa92efefb in TaskManager::AbstractSortingStrategy::qt_metacall (this=0x8ca5480, _c=QMetaObject::InvokeMetaMethod, _id=-1081638256, _a=0xbf878828) at ./abstractsortingstrategy.moc:74
#22 0xa92f4a32 in TaskManager::AlphaSortingStrategy::qt_metacall (this=0x8ca5480, _c=QMetaObject::InvokeMetaMethod, _id=6, _a=0xbf878828) at ./alphasortingstrategy.moc:58
#23 0xb761e303 in QMetaObject::activate (sender=0xd251b98, from_signal_index=21, to_signal_index=21, argv=0x0) at kernel/qobject.cpp:3112
#24 0xb761ef42 in QMetaObject::activate (sender=0xd251b98, m=0xa931723c, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3186
#25 0xa930be67 in TaskManager::TaskItem::gotTaskPointer (this=0xd251b98) at ./taskitem.moc:116
#26 0xa930c755 in TaskManager::TaskItem::setTaskPointer (this=0xd251b98, task=...) at ../../../libs/taskmanager/taskitem.cpp:99
#27 0xa92f0f15 in TaskManager::GroupManagerPrivate::addTask (this=0x8d1d7f8, task=...) at ../../../libs/taskmanager/groupmanager.cpp:268
#28 0xa92f31f2 in TaskManager::GroupManager::qt_metacall (this=0x8cf4458, _c=QMetaObject::InvokeMetaMethod, _id=10, _a=0xbf878a5c) at ./groupmanager.moc:103
#29 0xb761e303 in QMetaObject::activate (sender=0x8cd1898, from_signal_index=4, to_signal_index=4, argv=0xbf878a5c) at kernel/qobject.cpp:3112
#30 0xb761ef42 in QMetaObject::activate (sender=0x8cd1898, m=0xa931731c, local_signal_index=0, argv=0xbf878a5c) at kernel/qobject.cpp:3186
#31 0xa930d2a3 in TaskManager::TaskManager::taskAdded (this=0x8cd1898, _t1=...) at ./taskmanager.moc:155
#32 0xa930f4d6 in TaskManager::TaskManager::windowAdded (this=0x8cd1898, w=50331673) at ../../../libs/taskmanager/taskmanager.cpp:262
#33 0xa93107ec in TaskManager::TaskManager::qt_metacall (this=0x8cd1898, _c=QMetaObject::InvokeMetaMethod, _id=6, _a=0xbf878c1c) at ./taskmanager.moc:109
#34 0xb761e303 in QMetaObject::activate (sender=0x8b5a9c8, from_signal_index=5, to_signal_index=5, argv=0xbf878c1c) at kernel/qobject.cpp:3112
#35 0xb761ef42 in QMetaObject::activate (sender=0x8b5a9c8, m=0xb6ea978c, local_signal_index=1, argv=0xbf878c1c) at kernel/qobject.cpp:3186
#36 0xb6e42de3 in KWindowSystem::windowAdded (this=0x8b5a9c8, _t1=50331673) at ./kwindowsystem.moc:120
#37 0xb6e453f1 in KWindowSystemPrivate::addClient (this=0x8a64560, w=50331673) at ../../kdeui/windowmanagement/kwindowsystem_x11.cpp:229
#38 0xb6e5411d in NETRootInfo::update (this=0x8a64574, dirty_props=0xbf878df8) at ../../kdeui/windowmanagement/netwm.cpp:2186
#39 0xb6e54d0e in NETRootInfo::event (this=0x8a64574, event=0xbf87a4dc, properties=0xbf878e78, properties_size=5) at ../../kdeui/windowmanagement/netwm.cpp:2058
#40 0xb6e457ed in KWindowSystemPrivate::x11Event (this=0x8a64560, ev=0xbf87a47c) at ../../kdeui/windowmanagement/kwindowsystem_x11.cpp:136
#41 0xb6cf9489 in KAppX11HackWidget::publicx11Event (this=0x8a0fb68, _event=0xbf87a47c) at ../../kdeui/kernel/kapplication.cpp:900
#42 KApplication::x11EventFilter (this=0x8a0fb68, _event=0xbf87a47c) at ../../kdeui/kernel/kapplication.cpp:950
#43 0xb444a61c in PlasmaApp::x11EventFilter (this=0x8a0fb68, event=0xbf87a47c) at ../../../../plasma/shells/desktop/plasmaapp.cpp:490
#44 0xb6311d5e in qt_x11EventFilter (ev=0xbf87a47c) at kernel/qapplication_x11.cpp:377
#45 0xb6323e27 in QApplication::x11ProcessEvent (this=0x8a0fb68, event=0xbf87a47c) at kernel/qapplication_x11.cpp:3273
#46 0xb634fbc2 in x11EventSourceDispatch (s=0x8a17ab0, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#47 0xb5e92e98 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#48 0xb5e96623 in ?? () from /lib/libglib-2.0.so.0
#49 0xb5e967a8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#50 0xb7634041 in QEventDispatcherGlib::processEvents (this=0x8a15600, flags=...) at kernel/qeventdispatcher_glib.cpp:407
#51 0xb634f305 in QGuiEventDispatcherGlib::processEvents (this=0x8a15600, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#52 0xb760783a in QEventLoop::processEvents (this=0xbf87a6e0, flags=...) at kernel/qeventloop.cpp:149
#53 0xb7607c82 in QEventLoop::exec (this=0xbf87a6e0, flags=...) at kernel/qeventloop.cpp:201
#54 0xb760a0d9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#55 0xb62af917 in QApplication::exec () at kernel/qapplication.cpp:3525
#56 0xb4434ec0 in kdemain (argc=1, argv=0x89f66d0) at ../../../../plasma/shells/desktop/main.cpp:50
#57 0x0804e291 in launch (argc=1, _name=0x89f68fc "/usr/bin/plasma-desktop", args=0x89f6914 "", cwd=0x0, envc=0, envs=0x89f6918 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x805109f "0") at ../../kinit/kinit.cpp:677
#58 0x0804ea15 in handle_launcher_request (sock=7, who=<value optimized out>) at ../../kinit/kinit.cpp:1169
#59 0x0804ef3f in handle_requests (waitForPid=0) at ../../kinit/kinit.cpp:1362
#60 0x0804f6c9 in main (argc=2, argv=0xbf87af64, envp=0xbf87af70) at ../../kinit/kinit.cpp:1793

Reported using DrKonqi