Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.1 (KDE 4.3.1)
Qt Version: 4.5.2
Operating System: Linux 2.6.28-15-generic x86_64
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
I just installed Stasks and added to my panel. After that i started two programms. Plasma crashed after starting the second one

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 19222)]

Thread 3 (Thread 0x7f2863bc1950 (LWP 19225)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007f2885185d19 in QWaitCondition::wait (this=0x238a6c0, mutex=0x238a6b8, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  0x00007f288400b81c in QHostInfoAgent::run (this=0x238a6a0) at kernel/qhostinfo.cpp:260
#3  0x00007f2885184d35 in QThreadPrivate::start (arg=0x238a6a0) at thread/qthread_unix.cpp:188
#4  0x00007f28810793ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#5  0x00007f2881c5dfcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f285a480950 (LWP 19226)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:217
#1  0x00007f2885184785 in thread_sleep (ti=0x7f285a47ffb0) at thread/qthread_unix.cpp:297
#2  0x00007f28851848ee in QThread::msleep (msecs=50) at thread/qthread_unix.cpp:323
#3  0x00007f2864c3f10e in ?? () from /usr/lib/kde4/plasma_applet_cwp.so
#4  0x00007f2885184d35 in QThreadPrivate::start (arg=0x24f5a50) at thread/qthread_unix.cpp:188
#5  0x00007f28810793ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#6  0x00007f2881c5dfcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f2885747750 (LWP 19222)):
[KCrash Handler]
#5  0x00007f28678cb104 in TaskManager::TaskItem::task (this=0x60b5c0) at /usr/include/KDE/../ksharedptr.h:84
#6  0x00007f285864674d in STasksTask::task (this=<value optimized out>) at /home/felix/download/stasks-0.5.1/applet/stasks_task.cpp:156
#7  0x00007f28586443e6 in STasksItem::updateState (this=0x3e0a4b0) at /home/felix/download/stasks-0.5.1/applet/stasks_item.cpp:368
#8  0x00007f285864491d in STasksItem (this=0x3e0a4b0, abstractItem=<value optimized out>, parent=<value optimized out>) at /home/felix/download/stasks-0.5.1/applet/stasks_item.cpp:99
#9  0x00007f285863c2c7 in STasksApplet::itemAdded (this=0x3b8bc90, groupableItem=0x3c4f820) at /home/felix/download/stasks-0.5.1/applet/stasks_applet.cpp:92
#10 0x00007f285863e65f in STasksApplet::qt_metacall (this=0x3b8bc90, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff8d77fb30)
    at /home/felix/download/stasks-0.5.1/applet/build/stasks_applet.moc:96
#11 0x00007f2885283ea2 in QMetaObject::activate (sender=0x3c5de50, from_signal_index=<value optimized out>, to_signal_index=21, argv=0x24eb170) at kernel/qobject.cpp:3113
#12 0x00007f28678c8ccf in TaskManager::TaskGroup::itemAdded (this=0x7fff8d77f8f0, _t1=0x3c4f820) at /build/buildd/kdebase-workspace-4.3.1/obj-x86_64-linux-gnu/libs/taskmanager/taskgroup.moc:139
#13 0x00007f28678c982b in TaskManager::TaskGroup::add (this=0x3c5de50, item=0x3c4f820) at /build/buildd/kdebase-workspace-4.3.1/libs/taskmanager/taskgroup.cpp:138
#14 0x00007f28678af523 in TaskManager::AbstractGroupingStrategy::createGroup (this=0x3c5d3e0, items=
        {{p = {static shared_null = {ref = {_q_value = 54612}, alloc = 0, begin = 0, end = 0, sharable = 1, array = {0x0}}, d = 0x7fff8d77fc60}, d = 0x7fff8d77fc60}})
    at /build/buildd/kdebase-workspace-4.3.1/libs/taskmanager/abstractgroupingstrategy.cpp:144
#15 0x00007f28678b81bd in TaskManager::ProgramGroupingStrategy::programGrouping (this=0x3c5d3e0, taskItem=<value optimized out>, groupItem=0x3c5de50)
    at /build/buildd/kdebase-workspace-4.3.1/libs/taskmanager/strategies/programgroupingstrategy.cpp:191
#16 0x00007f28678b8642 in TaskManager::ProgramGroupingStrategy::handleItem (this=0x3c5d3e0, item=0x3df0630)
    at /build/buildd/kdebase-workspace-4.3.1/libs/taskmanager/strategies/programgroupingstrategy.cpp:152
#17 0x00007f28678b20bd in TaskManager::GroupManagerPrivate::addTask (this=0x1e5e9e0, task={d = 0x7fff8d77fe90}) at /build/buildd/kdebase-workspace-4.3.1/libs/taskmanager/groupmanager.cpp:288
#18 0x00007f28678b434d in TaskManager::GroupManager::qt_metacall (this=0x3bdaf90, _c=<value optimized out>, _id=<value optimized out>, _a=0x7fff8d77ffc0)
    at /build/buildd/kdebase-workspace-4.3.1/obj-x86_64-linux-gnu/libs/taskmanager/groupmanager.moc:103
#19 0x00007f2885283ea2 in QMetaObject::activate (sender=0x35c7dc0, from_signal_index=<value optimized out>, to_signal_index=4, argv=0x24eb170) at kernel/qobject.cpp:3113
#20 0x00007f28678cc162 in TaskManager::TaskManager::taskAdded (this=0x7fff8d77f8f0, _t1=<value optimized out>)
    at /build/buildd/kdebase-workspace-4.3.1/obj-x86_64-linux-gnu/libs/taskmanager/taskmanager.moc:155
#21 0x00007f28678ce13f in TaskManager::TaskManager::windowAdded (this=0x35c7dc0, w=58720342) at /build/buildd/kdebase-workspace-4.3.1/libs/taskmanager/taskmanager.cpp:262
#22 0x00007f28678cf33f in TaskManager::TaskManager::qt_metacall (this=0x35c7dc0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff8d780250)
    at /build/buildd/kdebase-workspace-4.3.1/obj-x86_64-linux-gnu/libs/taskmanager/taskmanager.moc:109
#23 0x00007f2885283ea2 in QMetaObject::activate (sender=0x1ecea70, from_signal_index=<value optimized out>, to_signal_index=5, argv=0x24eb170) at kernel/qobject.cpp:3113
#24 0x00007f2883a74b92 in KWindowSystem::windowAdded (this=0x7fff8d77f8f0, _t1=58720342) at /build/buildd/kde4libs-4.3.1/obj-x86_64-linux-gnu/kdeui/kwindowsystem.moc:120
#25 0x00007f2883a76eec in KWindowSystemPrivate::addClient (this=0x2072220, w=58720342) at /build/buildd/kde4libs-4.3.1/kdeui/windowmanagement/kwindowsystem_x11.cpp:229
#26 0x00007f2883a858c7 in NETRootInfo::update (this=0x2072248, dirty_props=<value optimized out>) at /build/buildd/kde4libs-4.3.1/kdeui/windowmanagement/netwm.cpp:2186
#27 0x00007f2883a865bb in NETRootInfo::event (this=0x2072248, event=<value optimized out>, properties=0x7fff8d780590, properties_size=5)
    at /build/buildd/kde4libs-4.3.1/kdeui/windowmanagement/netwm.cpp:2058
#28 0x00007f2883a7736b in KWindowSystemPrivate::x11Event (this=0x2072220, ev=0x7fff8d781fc0) at /build/buildd/kde4libs-4.3.1/kdeui/windowmanagement/kwindowsystem_x11.cpp:136
#29 0x00007f2883947203 in KApplication::x11EventFilter (this=<value optimized out>, _event=0x7fff8d781fc0) at /build/buildd/kde4libs-4.3.1/kdeui/kernel/kapplication.cpp:911
#30 0x00007f28790da907 in PlasmaApp::x11EventFilter (this=0x1de1770, event=0x7fff8d781fc0) at /build/buildd/kdebase-workspace-4.3.1/plasma/shells/desktop/plasmaapp.cpp:490
#31 0x00007f288289137f in qt_x11EventFilter (ev=0x7fff8d781fc0) at kernel/qapplication_x11.cpp:375
#32 0x00007f28828a487e in QApplication::x11ProcessEvent (this=0x1de1770, event=0x7fff8d781fc0) at kernel/qapplication_x11.cpp:3271
#33 0x00007f28828ce454 in x11EventSourceDispatch (s=0x1e26100, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#34 0x00007f28812c820a in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#35 0x00007f28812cb8e0 in ?? () from /usr/lib/libglib-2.0.so.0
#36 0x00007f28812cba7c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#37 0x00007f2885297a8f in QEventDispatcherGlib::processEvents (this=0x1e22010, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#38 0x00007f28828cdbdf in QGuiEventDispatcherGlib::processEvents (this=0x7fff8d77f8f0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#39 0x00007f288526cf42 in QEventLoop::processEvents (this=<value optimized out>, flags={i = -1921506640}) at kernel/qeventloop.cpp:149
#40 0x00007f288526d314 in QEventLoop::exec (this=0x7fff8d7822f0, flags={i = -1921506560}) at kernel/qeventloop.cpp:201
#41 0x00007f288526f5e4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#42 0x00007f28790c73eb in kdemain (argc=1, argv=0x1dd8030) at /build/buildd/kdebase-workspace-4.3.1/plasma/shells/desktop/main.cpp:50
#43 0x0000000000407215 in launch (argc=1, _name=0x1dd7678 "/usr/bin/plasma-desktop", args=<value optimized out>, cwd=0x0, envc=0, envs=0x1dd7698 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x40a3a1 "0") at /build/buildd/kde4libs-4.3.1/kinit/kinit.cpp:677
#44 0x0000000000407a38 in handle_launcher_request (sock=7, who=<value optimized out>) at /build/buildd/kde4libs-4.3.1/kinit/kinit.cpp:1169
#45 0x0000000000407fe5 in handle_requests (waitForPid=0) at /build/buildd/kde4libs-4.3.1/kinit/kinit.cpp:1362
#46 0x0000000000408b26 in main (argc=2, argv=0x7fff8d783198, envp=0x7fff8d7831b0) at /build/buildd/kde4libs-4.3.1/kinit/kinit.cpp:1793

This bug may be a duplicate of or related to bug 191141

Reported using DrKonqi