Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.4 (KDE 4.3.4)
Qt Version: 4.5.3
Operating System: Linux 2.6.30-2-amd64 x86_64
Distribution: Debian GNU/Linux testing (squeeze)

What I was doing when the application crashed:
During normal operation plasma workspace crashes randomly after updating to kde 4.3.4 on debian. I think it happened sometimes when changing desktops through Ctrl+F1/F2... or using desktop changer buttons on panel.

It seems to auto recover again now...but during the first days, maybe until second update to 4.3.4 came, it couldn't restart again and only solution was rebooting the system.

 -- Backtrace:
Application: Área de trabajo de Plasma (kdeinit4), signal: Segmentation fault
The current source language is "auto; currently c".
[Current thread is 1 (Thread 0x7f2ef807e750 (LWP 3039))]

Thread 2 (Thread 0x7f2ed58ca910 (LWP 3042)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007f2ef7ac1499 in QWaitConditionPrivate::wait (this=0x2a18680, mutex=0x2a18678, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  QWaitCondition::wait (this=0x2a18680, mutex=0x2a18678, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:159
#3  0x00007f2ef3eb03b4 in QHostInfoAgent::run (this=0x2a18660) at kernel/qhostinfo.cpp:260
#4  0x00007f2ef7ac04a5 in QThreadPrivate::start (arg=0x2a18660) at thread/qthread_unix.cpp:188
#5  0x00007f2ef47ec73a in start_thread (arg=<value optimized out>) at pthread_create.c:300
#6  0x00007f2ef53b569d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f2ef807e750 (LWP 3039)):
[KCrash Handler]
#5  QGraphicsLayoutItem::isLayout (this=0x4037000000000000) at graphicsview/qgraphicslayoutitem.cpp:783
#6  0x00007f2ef61034ad in QGraphicsLayoutPrivate::addChildLayoutItem (this=0x29ae070, layoutItem=0x3101440) at graphicsview/qgraphicslayout_p.cpp:151
#7  0x00007f2ef611d7db in QGraphicsGridLayout::addItem (this=0x2828540, item=0x3101440, row=0, column=0, rowSpan=1, columnSpan=1, alignment=...) at graphicsview/qgraphicsgridlayout.cpp:158
#8  0x00007f2eda23a6d6 in TaskItemLayout::layoutItems (this=0x2828530) at ../../../../plasma/applets/tasks/taskitemlayout.cpp:375
#9  0x00007f2eda23ac1b in TaskItemLayout::insert (this=0x2828530, index=<value optimized out>, item=0x366fbd0) at ../../../../plasma/applets/tasks/taskitemlayout.cpp:129
#10 0x00007f2eda23ae10 in TaskItemLayout::addTaskItem (this=0x2828530, item=0x366fbd0) at ../../../../plasma/applets/tasks/taskitemlayout.cpp:82
#11 0x00007f2eda246fd8 in TaskGroupItem::itemAdded (this=0x2998780, groupableItem=0x3e41ad0) at ../../../../plasma/applets/tasks/taskgroupitem.cpp:477
#12 0x00007f2eda247664 in TaskGroupItem::qt_metacall (this=0x2998780, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff8cd40b10) at ./taskgroupitem.moc:113
#13 0x00007f2ef7bbadf2 in QMetaObject::activate (sender=0x28c88c0, from_signal_index=<value optimized out>, to_signal_index=21, argv=0x0) at kernel/qobject.cpp:3112
#14 0x00007f2eda47fd5f in TaskManager::TaskGroup::itemAdded (this=0x4037000000000000, _t1=0x3e41ad0) at ./taskgroup.moc:145
#15 0x00007f2eda48064f in TaskManager::TaskGroup::add (this=0x28c88c0, item=0x3e41ad0) at ../../../libs/taskmanager/taskgroup.cpp:138
#16 0x00007f2eda469fa4 in TaskManager::GroupManagerPrivate::addTask (this=0x29b77e0, task=) at ../../../libs/taskmanager/groupmanager.cpp:290
#17 0x00007f2eda46a88b in TaskManager::GroupManagerPrivate::actuallyReloadTasks (this=0x29b77e0) at ../../../libs/taskmanager/groupmanager.cpp:155
#18 0x00007f2eda46c109 in TaskManager::GroupManager::qt_metacall (this=0x28e1000, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff8cd40d80) at ./groupmanager.moc:108
#19 0x00007f2ef7bbadf2 in QMetaObject::activate (sender=0x29b7848, from_signal_index=<value optimized out>, to_signal_index=4, argv=0x0) at kernel/qobject.cpp:3112
#20 0x00007f2ef7bb5353 in QObject::event (this=0x29b7848, e=0x3101440) at kernel/qobject.cpp:1074
#21 0x00007f2ef5b2601d in QApplicationPrivate::notify_helper (this=0x25087d0, receiver=0x29b7848, e=0x7fff8cd41430) at kernel/qapplication.cpp:4065
#22 0x00007f2ef5b2e07a in QApplication::notify (this=0x24ff530, receiver=0x29b7848, e=0x7fff8cd41430) at kernel/qapplication.cpp:4030
#23 0x00007f2ef677de06 in KApplication::notify (this=0x24ff530, receiver=0x29b7848, event=0x7fff8cd41430) at ../../kdeui/kernel/kapplication.cpp:302
#24 0x00007f2ef7ba5c9c in QCoreApplication::notifyInternal (this=0x24ff530, receiver=0x29b7848, event=0x7fff8cd41430) at kernel/qcoreapplication.cpp:610
#25 0x00007f2ef7bd22c6 in QCoreApplication::sendEvent (this=0x250bc60) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#26 QTimerInfoList::activateTimers (this=0x250bc60) at kernel/qeventdispatcher_unix.cpp:580
#27 0x00007f2ef7bce658 in timerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#28 idleTimerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:231
#29 0x00007f2ef4a3d13a in g_main_dispatch (context=0x250ad20) at /tmp/buildd/glib2.0-2.22.3/glib/gmain.c:1960
#30 IA__g_main_context_dispatch (context=0x250ad20) at /tmp/buildd/glib2.0-2.22.3/glib/gmain.c:2513
#31 0x00007f2ef4a40998 in g_main_context_iterate (context=0x250ad20, block=1, dispatch=1, self=<value optimized out>) at /tmp/buildd/glib2.0-2.22.3/glib/gmain.c:2591
#32 0x00007f2ef4a40b4c in IA__g_main_context_iteration (context=0x250ad20, may_block=1) at /tmp/buildd/glib2.0-2.22.3/glib/gmain.c:2654
#33 0x00007f2ef7bce39c in QEventDispatcherGlib::processEvents (this=0x247c850, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:407
#34 0x00007f2ef5bbcf1f in QGuiEventDispatcherGlib::processEvents (this=0x4037000000000000, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#35 0x00007f2ef7ba4562 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#36 0x00007f2ef7ba4934 in QEventLoop::exec (this=0x7fff8cd416e0, flags=...) at kernel/qeventloop.cpp:201
#37 0x00007f2ef7ba6ba4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#38 0x00007f2eebcda2af in kdemain (argc=<value optimized out>, argv=<value optimized out>) at ../../../../plasma/shells/desktop/main.cpp:50
#39 0x0000000000406e9e in launch (argc=1, _name=<value optimized out>, args=<value optimized out>, cwd=<value optimized out>, envc=0, envs=<value optimized out>, reset_env=false, tty=0x0, 
    avoid_loops=false, startup_id_str=0x40a057 "0") at ../../kinit/kinit.cpp:677
#40 0x0000000000407aad in handle_launcher_request (sock=8, who=<value optimized out>) at ../../kinit/kinit.cpp:1169
#41 0x0000000000407f91 in handle_requests (waitForPid=0) at ../../kinit/kinit.cpp:1362
#42 0x00000000004086c6 in main (argc=2, argv=<value optimized out>, envp=<value optimized out>) at ../../kinit/kinit.cpp:1793
The current source language is "auto; currently asm".
The current source language is "auto; currently c".

This bug may be a duplicate of or related to bug 219120

Reported using DrKonqi