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: 4.5.0
Operating System: Linux 2.6.28-13-generic i686
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
When I change desktops (mostly with the keyboard), this crash occurs.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 3863)]

Thread 2 (Thread 0xa93bbb90 (LWP 3866)):
#0  0xb800a430 in __kernel_vsyscall ()
#1  0xb64cf0e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb66af2ed in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb7e029b2 in QWaitCondition::wait (this=0x8b6f428, mutex=0x8b6f424, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  0xb773e152 in QHostInfoAgent::run (this=0x8b6f418) at kernel/qhostinfo.cpp:260
#5  0xb7e0196e in QThreadPrivate::start (arg=0x8b6f418) at thread/qthread_unix.cpp:189
#6  0xb64cb4ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb66a049e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb5fd9a10 (LWP 3863)):
[KCrash Handler]
#6  TaskManager::GroupManager::manualSortingRequest (this=0x0, taskItem=0x967e3c0, newIndex=0) at /build/buildd/kdebase-workspace-4.2.95/libs/taskmanager/groupmanager.cpp:363
#7  0xa95f331b in TaskManager::AbstractGroupingStrategy::closeGroup (this=0x8f3eeb8, group=0x87aaf00) at /build/buildd/kdebase-workspace-4.2.95/libs/taskmanager/abstractgroupingstrategy.cpp:167
#8  0xa95faf27 in TaskManager::ProgramGroupingStrategy::checkGroup (this=0x8f3eeb8) at /build/buildd/kdebase-workspace-4.2.95/libs/taskmanager/strategies/programgroupingstrategy.cpp:204
#9  0xa95fbe5b in TaskManager::ProgramGroupingStrategy::qt_metacall (this=0x8f3eeb8, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0xbf92554c)
    at /build/buildd/kdebase-workspace-4.2.95/obj-i486-linux-gnu/libs/taskmanager/programgroupingstrategy.moc:68
#10 0xb7f0bca8 in QMetaObject::activate (sender=0x87aaf00, from_signal_index=22, to_signal_index=22, argv=0xbf92554c) at kernel/qobject.cpp:3069
#11 0xb7f0c932 in QMetaObject::activate (sender=0x87aaf00, m=0xa961db74, local_signal_index=1, argv=0xbf92554c) at kernel/qobject.cpp:3143
#12 0xa960ed83 in TaskManager::TaskGroup::itemRemoved (this=0x87aaf00, _t1=0x8fa6fa8) at /build/buildd/kdebase-workspace-4.2.95/obj-i486-linux-gnu/libs/taskmanager/taskgroup.moc:146
#13 0xa960f7ab in TaskManager::TaskGroup::remove (this=0x87aaf00, item=0x8fa6fa8) at /build/buildd/kdebase-workspace-4.2.95/libs/taskmanager/taskgroup.cpp:182
#14 0xa95f5ba5 in TaskManager::GroupManagerPrivate::removeTask (this=0x89fe178, task={d = 0xbf9255fc}) at /build/buildd/kdebase-workspace-4.2.95/libs/taskmanager/groupmanager.cpp:311
#15 0xa95f846a in TaskManager::GroupManager::qt_metacall (this=0x8817060, _c=QMetaObject::InvokeMetaMethod, _id=11, _a=0xbf9256dc)
    at /build/buildd/kdebase-workspace-4.2.95/obj-i486-linux-gnu/libs/taskmanager/groupmanager.moc:105
#16 0xb7f0bca8 in QMetaObject::activate (sender=0x8a24cb0, from_signal_index=5, to_signal_index=5, argv=0xbf9256dc) at kernel/qobject.cpp:3069
#17 0xb7f0c932 in QMetaObject::activate (sender=0x8a24cb0, m=0xa961dd3c, local_signal_index=1, argv=0xbf9256dc) at kernel/qobject.cpp:3143
#18 0xa9612823 in TaskManager::TaskManager::taskRemoved (this=0x8a24cb0, _t1={d = 0xbf925724}) at /build/buildd/kdebase-workspace-4.2.95/obj-i486-linux-gnu/libs/taskmanager/taskmanager.moc:162
#19 0xa96140cf in TaskManager::TaskManager::windowRemoved (this=0x8a24cb0, w=27263479) at /build/buildd/kdebase-workspace-4.2.95/libs/taskmanager/taskmanager.cpp:279
#20 0xa9615fec in TaskManager::TaskManager::qt_metacall (this=0x8a24cb0, _c=QMetaObject::InvokeMetaMethod, _id=7, _a=0xbf92584c)
    at /build/buildd/kdebase-workspace-4.2.95/obj-i486-linux-gnu/libs/taskmanager/taskmanager.moc:110
#21 0xb7f0bca8 in QMetaObject::activate (sender=0x86bf728, from_signal_index=6, to_signal_index=6, argv=0xbf92584c) at kernel/qobject.cpp:3069
#22 0xb7f0c932 in QMetaObject::activate (sender=0x86bf728, m=0xb767426c, local_signal_index=2, argv=0xbf92584c) at kernel/qobject.cpp:3143
#23 0xb760c853 in KWindowSystem::windowRemoved (this=0x86bf728, _t1=27263479) at /build/buildd/kde4libs-4.2.95/obj-i486-linux-gnu/kdeui/kwindowsystem.moc:127
#24 0xb760f0d6 in KWindowSystemPrivate::removeClient (this=0x8575638, w=27263479) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/kwindowsystem_x11.cpp:249
#25 0xb761e753 in NETRootInfo::update (this=0x857564c, dirty_props=0xbf925994) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/netwm.cpp:2135
#26 0xb761eb3f in NETRootInfo::event (this=0x857564c, event=0xbf9260ac, properties=0xbf925a78, properties_size=5) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/netwm.cpp:2058
#27 0xb760f36d in KWindowSystemPrivate::x11Event (this=0x8575638, ev=0xbf92604c) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/kwindowsystem_x11.cpp:136
#28 0xb74bf6f9 in KApplication::x11EventFilter (this=0x845eb98, _event=0xbf92604c) at /build/buildd/kde4libs-4.2.95/kdeui/kernel/kapplication.cpp:911
#29 0xb4b46e37 in PlasmaApp::x11EventFilter (this=0x845eb98, event=0xbf92604c) at /build/buildd/kdebase-workspace-4.2.95/plasma/shells/desktop/plasmaapp.cpp:490
#30 0xb69e8f3e in qt_x11EventFilter (ev=0xbf92604c) at kernel/qapplication_x11.cpp:375
#31 0xb69fb6a8 in QApplication::x11ProcessEvent (this=0x845eb98, event=0xbf92604c) at kernel/qapplication_x11.cpp:3273
#32 0xb6a27c6a in x11EventSourceDispatch (s=0x8467900, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#33 0xb6518b88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#34 0xb651c0eb in ?? () from /usr/lib/libglib-2.0.so.0
#35 0xb651c268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#36 0xb7f21438 in QEventDispatcherGlib::processEvents (this=0x84623b0, flags={i = -1080925688}) at kernel/qeventdispatcher_glib.cpp:323
#37 0xb6a27365 in QGuiEventDispatcherGlib::processEvents (this=0x84623b0, flags={i = -1080925640}) at kernel/qguieventdispatcher_glib.cpp:202
#38 0xb7ef406a in QEventLoop::processEvents (this=0xbf9262b0, flags={i = -1080925576}) at kernel/qeventloop.cpp:149
#39 0xb7ef44aa in QEventLoop::exec (this=0xbf9262b0, flags={i = -1080925512}) at kernel/qeventloop.cpp:200
#40 0xb7ef6959 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:880
#41 0xb6985d17 in QApplication::exec () at kernel/qapplication.cpp:3553
#42 0xb4b31510 in kdemain (argc=1, argv=0x8400b40) at /build/buildd/kdebase-workspace-4.2.95/plasma/shells/desktop/main.cpp:50
#43 0x0804e1c0 in launch (argc=1, _name=0x842c16c "/usr/bin/plasma-desktop", args=0x842c184 "", cwd=0x0, envc=0, envs=0x842c188 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x80512d1 "0") at /build/buildd/kde4libs-4.2.95/kinit/kinit.cpp:672
#44 0x0804e99d in handle_launcher_request (sock=7, who=<value optimized out>) at /build/buildd/kde4libs-4.2.95/kinit/kinit.cpp:1164
#45 0x0804ef25 in handle_requests (waitForPid=0) at /build/buildd/kde4libs-4.2.95/kinit/kinit.cpp:1357
#46 0x0804fb0a in main (argc=2, argv=0xbf926aa4, envp=0xbf926ab0) at /build/buildd/kde4libs-4.2.95/kinit/kinit.cpp:1784

This bug may be a duplicate of or related to bug 199391

Reported using DrKonqi