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: 4.5.1
Operating System: Linux 2.6.28-11-generic i686
Distribution: Ubuntu 9.04

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 11213)]

Thread 2 (Thread 0xa7de3b90 (LWP 11218)):
#0  0xb7fbd430 in __kernel_vsyscall ()
#1  0xb64ae0e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb668e2ed in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb7db65b2 in QWaitCondition::wait (this=0x9995ba0, mutex=0x9995b9c, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  0xb76faae2 in QHostInfoAgent::run (this=0x9995b90) at kernel/qhostinfo.cpp:260
#5  0xb7db556e in QThreadPrivate::start (arg=0x9995b90) at thread/qthread_unix.cpp:189
#6  0xb64aa4ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb667f49e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb5fb8a10 (LWP 11213)):
[KCrash Handler]
#6  0xa847f32a in TaskManager::GroupManager::manualSortingRequest () from /usr/lib/libtaskmanager.so.4
#7  0xa847d31b in TaskManager::AbstractGroupingStrategy::closeGroup () from /usr/lib/libtaskmanager.so.4
#8  0xa8484f27 in ?? () from /usr/lib/libtaskmanager.so.4
#9  0xa8485e5b in ?? () from /usr/lib/libtaskmanager.so.4
#10 0xb7ebfa58 in QMetaObject::activate (sender=0xa02fee0, from_signal_index=22, to_signal_index=22, argv=0xbf8d8e0c) at kernel/qobject.cpp:3120
#11 0xb7ec06e2 in QMetaObject::activate (sender=0xa02fee0, m=0xa84a7b74, local_signal_index=1, argv=0xbf8d8e0c) at kernel/qobject.cpp:3194
#12 0xa8498d83 in TaskManager::TaskGroup::itemRemoved () from /usr/lib/libtaskmanager.so.4
#13 0xa84997ab in TaskManager::TaskGroup::remove () from /usr/lib/libtaskmanager.so.4
#14 0xa847fba5 in ?? () from /usr/lib/libtaskmanager.so.4
#15 0xa848246a in TaskManager::GroupManager::qt_metacall () from /usr/lib/libtaskmanager.so.4
#16 0xb7ebfa58 in QMetaObject::activate (sender=0x98d5ac8, from_signal_index=5, to_signal_index=5, argv=0xbf8d8f9c) at kernel/qobject.cpp:3120
#17 0xb7ec06e2 in QMetaObject::activate (sender=0x98d5ac8, m=0xa84a7d3c, local_signal_index=1, argv=0xbf8d8f9c) at kernel/qobject.cpp:3194
#18 0xa849c823 in TaskManager::TaskManager::taskRemoved () from /usr/lib/libtaskmanager.so.4
#19 0xa849e0cf in TaskManager::TaskManager::windowRemoved () from /usr/lib/libtaskmanager.so.4
#20 0xa849ffec in TaskManager::TaskManager::qt_metacall () from /usr/lib/libtaskmanager.so.4
#21 0xb7ebfa58 in QMetaObject::activate (sender=0x95aee40, from_signal_index=6, to_signal_index=6, argv=0xbf8d910c) at kernel/qobject.cpp:3120
#22 0xb7ec06e2 in QMetaObject::activate (sender=0x95aee40, m=0xb763226c, local_signal_index=2, argv=0xbf8d910c) at kernel/qobject.cpp:3194
#23 0xb75ca853 in KWindowSystem::windowRemoved (this=0x95aee40, _t1=27693880) at /build/buildd/kde4libs-4.2.95/obj-i486-linux-gnu/kdeui/kwindowsystem.moc:127
#24 0xb75cd0d6 in KWindowSystemPrivate::removeClient (this=0x9451178, w=27693880) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/kwindowsystem_x11.cpp:249
#25 0xb75dc753 in NETRootInfo::update (this=0x945118c, dirty_props=0xbf8d9254) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/netwm.cpp:2135
#26 0xb75dcb3f in NETRootInfo::event (this=0x945118c, event=0xbf8da9bc, properties=0xbf8d9338, properties_size=5) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/netwm.cpp:2058
#27 0xb75cd36d in KWindowSystemPrivate::x11Event (this=0x9451178, ev=0xbf8da95c) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/kwindowsystem_x11.cpp:136
#28 0xb747d6f9 in KApplication::x11EventFilter (this=0x933c7d8, _event=0xbf8da95c) at /build/buildd/kde4libs-4.2.95/kdeui/kernel/kapplication.cpp:911
#29 0xb3bcae37 in ?? () from /usr/lib/libkdeinit4_plasma-desktop.so
#30 0xb69a7c5e in qt_x11EventFilter (ev=0xbf8da95c) at kernel/qapplication_x11.cpp:375
#31 0xb69ba4ee in QApplication::x11ProcessEvent (this=0x933c7d8, event=0xbf8da95c) at kernel/qapplication_x11.cpp:3287
#32 0xb69e706a in x11EventSourceDispatch (s=0x9345370, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#33 0xb64f7b88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#34 0xb64fb0eb in ?? () from /usr/lib/libglib-2.0.so.0
#35 0xb64fb268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#36 0xb7ed51d8 in QEventDispatcherGlib::processEvents (this=0x9341ac8, flags={i = -1081234664}) at kernel/qeventdispatcher_glib.cpp:324
#37 0xb69e6765 in QGuiEventDispatcherGlib::processEvents (this=0x9341ac8, flags={i = -1081234616}) at kernel/qguieventdispatcher_glib.cpp:202
#38 0xb7ea7dda in QEventLoop::processEvents (this=0xbf8dabc0, flags={i = -1081234552}) at kernel/qeventloop.cpp:149
#39 0xb7ea821a in QEventLoop::exec (this=0xbf8dabc0, flags={i = -1081234488}) at kernel/qeventloop.cpp:200
#40 0xb7eaa6c9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#41 0xb6944a47 in QApplication::exec () at kernel/qapplication.cpp:3526
#42 0xb3bb5510 in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#43 0x0804e1c0 in launch (argc=1, _name=0x93134ac "/usr/bin/plasma-desktop", args=0x93134c4 "", cwd=0x0, envc=0, envs=0x93134c8 "", 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=0xbf8db3b4, envp=0xbf8db3c0) at /build/buildd/kde4libs-4.2.95/kinit/kinit.cpp:1784

This bug may be a duplicate of or related to bug 198703

Reported using DrKonqi