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 2.6.28-13-generic i686
Distribution: Ubuntu 9.04

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 3833)]

Thread 2 (Thread 0xa8e12b90 (LWP 3836)):
#0  0xb7f59430 in __kernel_vsyscall ()
#1  0xb644d0e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb662d2ed in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb7d555b2 in QWaitCondition::wait (this=0x9dbddb0, mutex=0x9dbddac, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  0xb7699ae2 in QHostInfoAgent::run (this=0x9dbdda0) at kernel/qhostinfo.cpp:260
#5  0xb7d5456e in QThreadPrivate::start (arg=0x9dbdda0) at thread/qthread_unix.cpp:189
#6  0xb64494ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb661e49e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb5f57a10 (LWP 3833)):
[KCrash Handler]
#6  0xa951e32a in TaskManager::GroupManager::manualSortingRequest () from /usr/lib/libtaskmanager.so.4
#7  0xa951c31b in TaskManager::AbstractGroupingStrategy::closeGroup () from /usr/lib/libtaskmanager.so.4
#8  0xa9523f27 in ?? () from /usr/lib/libtaskmanager.so.4
#9  0xa9524e5b in ?? () from /usr/lib/libtaskmanager.so.4
#10 0xb7e5ea58 in QMetaObject::activate (sender=0xaaf0648, from_signal_index=22, to_signal_index=22, argv=0xbfb750ac) at kernel/qobject.cpp:3120
#11 0xb7e5f6e2 in QMetaObject::activate (sender=0xaaf0648, m=0xa9546b74, local_signal_index=1, argv=0xbfb750ac) at kernel/qobject.cpp:3194
#12 0xa9537d83 in TaskManager::TaskGroup::itemRemoved () from /usr/lib/libtaskmanager.so.4
#13 0xa95387ab in TaskManager::TaskGroup::remove () from /usr/lib/libtaskmanager.so.4
#14 0xa951eba5 in ?? () from /usr/lib/libtaskmanager.so.4
#15 0xa952146a in TaskManager::GroupManager::qt_metacall () from /usr/lib/libtaskmanager.so.4
#16 0xb7e5ea58 in QMetaObject::activate (sender=0x99dbfd0, from_signal_index=5, to_signal_index=5, argv=0xbfb7523c) at kernel/qobject.cpp:3120
#17 0xb7e5f6e2 in QMetaObject::activate (sender=0x99dbfd0, m=0xa9546d3c, local_signal_index=1, argv=0xbfb7523c) at kernel/qobject.cpp:3194
#18 0xa953b823 in TaskManager::TaskManager::taskRemoved () from /usr/lib/libtaskmanager.so.4
#19 0xa953d0cf in TaskManager::TaskManager::windowRemoved () from /usr/lib/libtaskmanager.so.4
#20 0xa953efec in TaskManager::TaskManager::qt_metacall () from /usr/lib/libtaskmanager.so.4
#21 0xb7e5ea58 in QMetaObject::activate (sender=0x981cec8, from_signal_index=6, to_signal_index=6, argv=0xbfb753ac) at kernel/qobject.cpp:3120
#22 0xb7e5f6e2 in QMetaObject::activate (sender=0x981cec8, m=0xb75d126c, local_signal_index=2, argv=0xbfb753ac) at kernel/qobject.cpp:3194
#23 0xb7569853 in KWindowSystem::windowRemoved (this=0x981cec8, _t1=65132834) at /build/buildd/kde4libs-4.2.95/obj-i486-linux-gnu/kdeui/kwindowsystem.moc:127
#24 0xb756c0d6 in KWindowSystemPrivate::removeClient (this=0x9734a20, w=65132834) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/kwindowsystem_x11.cpp:249
#25 0xb757b7c2 in NETRootInfo::update (this=0x9734a34, dirty_props=0xbfb754f4) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/netwm.cpp:2131
#26 0xb757bb3f in NETRootInfo::event (this=0x9734a34, event=0xbfb76c5c, properties=0xbfb755d8, properties_size=5) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/netwm.cpp:2058
#27 0xb756c36d in KWindowSystemPrivate::x11Event (this=0x9734a20, ev=0xbfb76bfc) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/kwindowsystem_x11.cpp:136
#28 0xb741c6f9 in KApplication::x11EventFilter (this=0x96686a0, _event=0xbfb76bfc) at /build/buildd/kde4libs-4.2.95/kdeui/kernel/kapplication.cpp:911
#29 0xb4acbe37 in ?? () from /usr/lib/libkdeinit4_plasma-desktop.so
#30 0xb6946c5e in qt_x11EventFilter (ev=0xbfb76bfc) at kernel/qapplication_x11.cpp:375
#31 0xb69594ee in QApplication::x11ProcessEvent (this=0x96686a0, event=0xbfb76bfc) at kernel/qapplication_x11.cpp:3287
#32 0xb698606a in x11EventSourceDispatch (s=0x9671300, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#33 0xb6496b88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#34 0xb649a0eb in ?? () from /usr/lib/libglib-2.0.so.0
#35 0xb649a268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#36 0xb7e741d8 in QEventDispatcherGlib::processEvents (this=0x966bd58, flags={i = -1078497864}) at kernel/qeventdispatcher_glib.cpp:324
#37 0xb6985765 in QGuiEventDispatcherGlib::processEvents (this=0x966bd58, flags={i = -1078497816}) at kernel/qguieventdispatcher_glib.cpp:202
#38 0xb7e46dda in QEventLoop::processEvents (this=0xbfb76e60, flags={i = -1078497752}) at kernel/qeventloop.cpp:149
#39 0xb7e4721a in QEventLoop::exec (this=0xbfb76e60, flags={i = -1078497688}) at kernel/qeventloop.cpp:200
#40 0xb7e496c9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#41 0xb68e3a47 in QApplication::exec () at kernel/qapplication.cpp:3526
#42 0xb4ab6510 in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#43 0x0804e1c0 in launch (argc=1, _name=0x9655834 "/usr/bin/plasma-desktop", args=0x965584c "", cwd=0x0, envc=0, envs=0x9655850 "", 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=0xbfb77654, envp=0xbfb77660) at /build/buildd/kde4libs-4.2.95/kinit/kinit.cpp:1784

Reported using DrKonqi