Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.1 (KDE 4.3.1) "release 6"
Qt Version: 4.5.3
Operating System: Linux 2.6.31.8-0.1-desktop x86_64
Distribution: "openSUSE 11.2 (x86_64)"

What I was doing when the application crashed:
I had a lot of pdf files opened in okular. And I wanted have ungrouped the files and I did it. Then some of the okular instances get an empty slot in the taskbar and after of selecting one plasma desktop crashed.

 -- Backtrace:
Application: Área de trabajo de Plasma (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f958c950750 (LWP 3155))]

Thread 2 (Thread 0x7f956dbf7910 (LWP 3156)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007f958c39653b in wait (time=<value optimized out>, this=<value optimized out>) at thread/qwaitcondition_unix.cpp:87
#2  QWaitCondition::wait (time=<value optimized out>, this=<value optimized out>) at thread/qwaitcondition_unix.cpp:159
#3  0x00007f958886f9ec in QHostInfoAgent::run (this=0xdec250) at kernel/qhostinfo.cpp:260
#4  0x00007f958c395485 in QThreadPrivate::start (arg=0xdec250) at thread/qthread_unix.cpp:188
#5  0x00007f958c12165d in start_thread (arg=<value optimized out>) at pthread_create.c:297
#6  0x00007f9589b3514d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f958c950750 (LWP 3155)):
[KCrash Handler]
#5  0x00007f956f963be7 in TaskItemLayout::size (this=<value optimized out>) at /usr/src/debug/kdebase-workspace-4.3.1/plasma/applets/tasks/taskitemlayout.cpp:152
#6  0x00007f956f963d23 in TaskItemLayout::size (this=<value optimized out>) at /usr/src/debug/kdebase-workspace-4.3.1/plasma/applets/tasks/taskitemlayout.cpp:160
#7  0x00007f956f963fa2 in TaskItemLayout::gridLayoutSize (this=0x17a5a80) at /usr/src/debug/kdebase-workspace-4.3.1/plasma/applets/tasks/taskitemlayout.cpp:220
#8  0x00007f956f96403b in TaskItemLayout::layoutItems (this=0x17a5a80) at /usr/src/debug/kdebase-workspace-4.3.1/plasma/applets/tasks/taskitemlayout.cpp:245
#9  0x00007f956f96bebb in TaskGroupItem::constraintsChanged (this=0xe1e250, constraints=) at /usr/src/debug/kdebase-workspace-4.3.1/plasma/applets/tasks/taskgroupitem.cpp:726
#10 0x00007f956f970fc4 in TaskGroupItem::qt_metacall (this=0xe1e250, _c=InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff53143fc0)
    at /usr/src/debug/kdebase-workspace-4.3.1/build/plasma/applets/tasks/taskgroupitem.moc:110
#11 0x00007f958c48ffbc in QMetaObject::activate (sender=0xa9c300, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0xaeef40) at kernel/qobject.cpp:3113
#12 0x00007f956f95ecc2 in Tasks::constraintsChanged (this=0x17a5a80, _t1=<value optimized out>) at /usr/src/debug/kdebase-workspace-4.3.1/build/plasma/applets/tasks/tasks.moc:95
#13 0x00007f956f95f0ef in Tasks::constraintsEvent (this=0xa9c300, constraints=) at /usr/src/debug/kdebase-workspace-4.3.1/plasma/applets/tasks/tasks.cpp:173
#14 0x00007f958407d11c in Plasma::Applet::flushPendingConstraintsEvents (this=0xa9c300) at /usr/src/debug/kdelibs-4.3.1/plasma/applet.cpp:1163
#15 0x00007f958407d775 in Plasma::Applet::timerEvent (this=0xa9c300, event=<value optimized out>) at /usr/src/debug/kdelibs-4.3.1/plasma/applet.cpp:2110
#16 0x00007f958c489f63 in QObject::event (this=0xa9c300, e=0xcb6b50) at kernel/qobject.cpp:1075
#17 0x00007f958a82073b in QGraphicsWidget::event (this=0xa9c300, event=0x7fff53144820) at graphicsview/qgraphicswidget.cpp:1342
#18 0x00007f958a26b2ac in QApplicationPrivate::notify_helper (this=0x679750, receiver=0xa9c300, e=0x7fff53144820) at kernel/qapplication.cpp:4065
#19 0x00007f958a27257e in QApplication::notify (this=0x66d330, receiver=0xa9c300, e=0x7fff53144820) at kernel/qapplication.cpp:4030
#20 0x00007f958ae658d6 in KApplication::notify (this=0x66d330, receiver=0xa9c300, event=0x7fff53144820) at /usr/src/debug/kdelibs-4.3.1/kdeui/kernel/kapplication.cpp:302
#21 0x00007f958c47addc in QCoreApplication::notifyInternal (this=0x66d330, receiver=0xa9c300, event=0x7fff53144820) at kernel/qcoreapplication.cpp:610
#22 0x00007f958c4a671d in sendEvent (event=<value optimized out>, receiver=<value optimized out>) at kernel/qcoreapplication.h:213
#23 QTimerInfoList::activateTimers (event=<value optimized out>, receiver=<value optimized out>) at kernel/qeventdispatcher_unix.cpp:594
#24 0x00007f958c4a3678 in timerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#25 idleTimerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:231
#26 0x00007f95891b4dde in g_main_dispatch (context=<value optimized out>) at gmain.c:1960
#27 IA__g_main_context_dispatch (context=<value optimized out>) at gmain.c:2513
#28 0x00007f95891b87a8 in g_main_context_iterate (context=0x67bd20, block=<value optimized out>, dispatch=<value optimized out>, self=<value optimized out>) at gmain.c:2591
#29 0x00007f95891b88d0 in IA__g_main_context_iteration (context=0x67bd20, may_block=1) at gmain.c:2654
#30 0x00007f958c4a33a3 in QEventDispatcherGlib::processEvents (this=0x618810, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:407
#31 0x00007f958a2fe31e in QGuiEventDispatcherGlib::processEvents (this=0x17a5a80, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#32 0x00007f958c479712 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#33 0x00007f958c479ae4 in QEventLoop::exec (this=0x7fff53144b70, flags=) at kernel/qeventloop.cpp:201
#34 0x00007f958c47bc99 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#35 0x00007f958099ad6f in kdemain (argc=<value optimized out>, argv=<value optimized out>) at /usr/src/debug/kdebase-workspace-4.3.1/plasma/shells/desktop/main.cpp:50
#36 0x0000000000406f88 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=0x40a4bd "0") at /usr/src/debug/kdelibs-4.3.1/kinit/kinit.cpp:706
#37 0x0000000000407c80 in handle_launcher_request (sock=8, who=<value optimized out>) at /usr/src/debug/kdelibs-4.3.1/kinit/kinit.cpp:1198
#38 0x0000000000408131 in handle_requests (waitForPid=0) at /usr/src/debug/kdelibs-4.3.1/kinit/kinit.cpp:1391
#39 0x0000000000408dfa in main (argc=4, argv=<value optimized out>, envp=<value optimized out>) at /usr/src/debug/kdelibs-4.3.1/kinit/kinit.cpp:1830
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 211945

Reported using DrKonqi