Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.2.95 (KDE 4.2.95 (KDE 4.3 RC1))
Qt Version: 4.5.2
Operating System: Linux 2.6.31-1-generic x86_64
Distribution: Ubuntu karmic (development branch)

What I was doing when the application crashed:
I don't know much about this chrash.
It chrashed when I closed the compose window in thunderbird.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 3685)]

Thread 2 (Thread 0x7fbe61de3950 (LWP 3688)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007fbe846c249b in QWaitCondition::wait (this=<value optimized out>, mutex=0x1f1b758, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  0x00007fbe80afe71c in QHostInfoAgent::run (this=0x1f1b740) at kernel/qhostinfo.cpp:260
#3  0x00007fbe846c13e5 in QThreadPrivate::start (arg=0x1f1b740) at thread/qthread_unix.cpp:188
#4  0x00007fbe814423ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#5  0x00007fbe820291bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fbe84c82760 (LWP 3685)):
[KCrash Handler]
#5  TaskManager::GroupManager::manualSortingRequest (this=0x0, taskItem=0x1abbd50, newIndex=4) at ../../../libs/taskmanager/groupmanager.cpp:363
#6  0x00007fbe67e0c697 in TaskManager::AbstractGroupingStrategy::closeGroup (this=0x25f62f0, group=0x25f8730) at ../../../libs/taskmanager/abstractgroupingstrategy.cpp:167
#7  0x00007fbe67e135db in TaskManager::ProgramGroupingStrategy::checkGroup (this=0x25f62f0) at ../../../libs/taskmanager/strategies/programgroupingstrategy.cpp:204
#8  0x00007fbe67e14215 in TaskManager::ProgramGroupingStrategy::qt_metacall (this=0x25f62f0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=<value optimized out>)
    at ./programgroupingstrategy.moc:68
#9  0x00007fbe847bce1c in QMetaObject::activate (sender=0x25f8730, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x1) at kernel/qobject.cpp:3113
#10 0x00007fbe67e24ed2 in TaskManager::TaskGroup::itemRemoved (this=0x0, _t1=0x27dd5d0) at ./taskgroup.moc:146
#11 0x00007fbe67e255b1 in TaskManager::TaskGroup::remove (this=0x25f8730, item=0x27dd5d0) at ../../../libs/taskmanager/taskgroup.cpp:182
#12 0x00007fbe67e0ecc8 in TaskManager::GroupManagerPrivate::removeTask (this=0x1f75e00, task=) at ../../../libs/taskmanager/groupmanager.cpp:311
#13 0x00007fbe67e110ca in TaskManager::GroupManager::qt_metacall (this=0x1f736a0, _c=<value optimized out>, _id=<value optimized out>, _a=0x7fff27e79df0) at ./groupmanager.moc:105
#14 0x00007fbe847bce1c in QMetaObject::activate (sender=0x1f8a990, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x1) at kernel/qobject.cpp:3113
#15 0x00007fbe67e28345 in TaskManager::TaskManager::taskRemoved (this=0x0, _t1=<value optimized out>) at ./taskmanager.moc:162
#16 0x00007fbe67e29f0d in TaskManager::TaskManager::windowRemoved (this=0x1f8a990, w=41953384) at ../../../libs/taskmanager/taskmanager.cpp:279
#17 0x00007fbe67e2b6a7 in TaskManager::TaskManager::qt_metacall (this=0x1f8a990, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff27e7a030) at ./taskmanager.moc:110
#18 0x00007fbe847bce1c in QMetaObject::activate (sender=0x144b1f0, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x1) at kernel/qobject.cpp:3113
#19 0x00007fbe834c5b32 in KWindowSystem::windowRemoved (this=0x0, _t1=41953384) at ./kwindowsystem.moc:127
#20 0x00007fbe834c892a in KWindowSystemPrivate::removeClient (this=0x137c880, w=41953384) at ../../kdeui/windowmanagement/kwindowsystem_x11.cpp:249
#21 0x00007fbe834d6d4d in NETRootInfo::update (this=0x137c8a8, dirty_props=<value optimized out>) at ../../kdeui/windowmanagement/netwm.cpp:2135
#22 0x00007fbe834d70b3 in NETRootInfo::event (this=0x137c8a8, event=<value optimized out>, properties=0x7fff27e7a320, properties_size=5) at ../../kdeui/windowmanagement/netwm.cpp:2058
#23 0x00007fbe834c8bdc in KWindowSystemPrivate::x11Event (this=0x137c880, ev=0x7fff27e7bcf0) at ../../kdeui/windowmanagement/kwindowsystem_x11.cpp:136
#24 0x00007fbe83398846 in KApplication::x11EventFilter (this=<value optimized out>, _event=0x7fff27e7bcf0) at ../../kdeui/kernel/kapplication.cpp:911
#25 0x00007fbe799b8a57 in PlasmaApp::x11EventFilter (this=0x106ae10, event=0x7fff27e7bcf0) at ../../../../plasma/shells/desktop/plasmaapp.cpp:490
#26 0x00007fbe827bda31 in qt_x11EventFilter (ev=0x7fff27e7bcf0) at kernel/qapplication_x11.cpp:375
#27 0x00007fbe827ce094 in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7fff27e7bcf0) at kernel/qapplication_x11.cpp:3271
#28 0x00007fbe827f831c in x11EventSourceDispatch (s=<value optimized out>, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#29 0x00007fbe816928fe in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#30 0x00007fbe81695fd8 in ?? () from /usr/lib/libglib-2.0.so.0
#31 0x00007fbe81696100 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#32 0x00007fbe847d01f6 in QEventDispatcherGlib::processEvents (this=0x10736b0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#33 0x00007fbe827f7ace in QGuiEventDispatcherGlib::processEvents (this=0x0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#34 0x00007fbe847a6572 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#35 0x00007fbe847a6944 in QEventLoop::exec (this=0x7fff27e7c020, flags=) at kernel/qeventloop.cpp:201
#36 0x00007fbe847a8af9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#37 0x00007fbe799a56af in kdemain (argc=<value optimized out>, argv=<value optimized out>) at ../../../../plasma/shells/desktop/main.cpp:50
#38 0x0000000000406d23 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=0x40a221 "0") at ../../kinit/kinit.cpp:672
#39 0x00000000004079d0 in handle_launcher_request (sock=7, who=<value optimized out>) at ../../kinit/kinit.cpp:1164
#40 0x0000000000407f6f in handle_requests (waitForPid=<value optimized out>) at ../../kinit/kinit.cpp:1357
#41 0x0000000000408b22 in main (argc=2, argv=<value optimized out>, envp=<value optimized out>) at ../../kinit/kinit.cpp:1784

Reported using DrKonqi