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

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 6444)]

Thread 2 (Thread 0xa8273b90 (LWP 6447)):
#0  0xb8023430 in __kernel_vsyscall ()
#1  0xb64ec0e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb66cc2ed in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb7e1f9b2 in QWaitCondition::wait (this=0xa4f1908, mutex=0xa4f1904, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  0xb775b152 in QHostInfoAgent::run (this=0xa4f18f8) at kernel/qhostinfo.cpp:260
#5  0xb7e1e96e in QThreadPrivate::start (arg=0xa4f18f8) at thread/qthread_unix.cpp:189
#6  0xb64e84ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb66bd49e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb5ff6a10 (LWP 6444)):
[KCrash Handler]
#6  0xa858a32a in TaskManager::GroupManager::manualSortingRequest () from /usr/lib/libtaskmanager.so.4
#7  0xa858831b in TaskManager::AbstractGroupingStrategy::closeGroup () from /usr/lib/libtaskmanager.so.4
#8  0xa858ff27 in ?? () from /usr/lib/libtaskmanager.so.4
#9  0xa8590e5b in ?? () from /usr/lib/libtaskmanager.so.4
#10 0xb7f28ca8 in QMetaObject::activate (sender=0xa75ef88, from_signal_index=22, to_signal_index=22, argv=0xbfa3dfec) at kernel/qobject.cpp:3069
#11 0xb7f29932 in QMetaObject::activate (sender=0xa75ef88, m=0xa85b2b74, local_signal_index=1, argv=0xbfa3dfec) at kernel/qobject.cpp:3143
#12 0xa85a3d83 in TaskManager::TaskGroup::itemRemoved () from /usr/lib/libtaskmanager.so.4
#13 0xa85a47ab in TaskManager::TaskGroup::remove () from /usr/lib/libtaskmanager.so.4
#14 0xa858aba5 in ?? () from /usr/lib/libtaskmanager.so.4
#15 0xa858d46a in TaskManager::GroupManager::qt_metacall () from /usr/lib/libtaskmanager.so.4
#16 0xb7f28ca8 in QMetaObject::activate (sender=0xa3b4f10, from_signal_index=5, to_signal_index=5, argv=0xbfa3e17c) at kernel/qobject.cpp:3069
#17 0xb7f29932 in QMetaObject::activate (sender=0xa3b4f10, m=0xa85b2d3c, local_signal_index=1, argv=0xbfa3e17c) at kernel/qobject.cpp:3143
#18 0xa85a7823 in TaskManager::TaskManager::taskRemoved () from /usr/lib/libtaskmanager.so.4
#19 0xa85a90cf in TaskManager::TaskManager::windowRemoved () from /usr/lib/libtaskmanager.so.4
#20 0xa85aafec in TaskManager::TaskManager::qt_metacall () from /usr/lib/libtaskmanager.so.4
#21 0xb7f28ca8 in QMetaObject::activate (sender=0xa140ab0, from_signal_index=6, to_signal_index=6, argv=0xbfa3e2ec) at kernel/qobject.cpp:3069
#22 0xb7f29932 in QMetaObject::activate (sender=0xa140ab0, m=0xb769126c, local_signal_index=2, argv=0xbfa3e2ec) at kernel/qobject.cpp:3143
#23 0xb7629853 in KWindowSystem::windowRemoved (this=0xa140ab0, _t1=44040225) at /build/buildd/kde4libs-4.2.95/obj-i486-linux-gnu/kdeui/kwindowsystem.moc:127
#24 0xb762c0d6 in KWindowSystemPrivate::removeClient (this=0x9f862c8, w=44040225) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/kwindowsystem_x11.cpp:249
#25 0xb763b7c2 in NETRootInfo::update (this=0x9f862dc, dirty_props=0xbfa3e434) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/netwm.cpp:2131
#26 0xb763bb3f in NETRootInfo::event (this=0x9f862dc, event=0xbfa3eb4c, properties=0xbfa3e518, properties_size=5) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/netwm.cpp:2058
#27 0xb762c36d in KWindowSystemPrivate::x11Event (this=0x9f862c8, ev=0xbfa3eaec) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/kwindowsystem_x11.cpp:136
#28 0xb74dc6f9 in KApplication::x11EventFilter (this=0x9e2fa58, _event=0xbfa3eaec) at /build/buildd/kde4libs-4.2.95/kdeui/kernel/kapplication.cpp:911
#29 0xb3bcbe37 in ?? () from /usr/lib/libkdeinit4_plasma-desktop.so
#30 0xb6a05f3e in qt_x11EventFilter (ev=0xbfa3eaec) at kernel/qapplication_x11.cpp:375
#31 0xb6a186a8 in QApplication::x11ProcessEvent (this=0x9e2fa58, event=0xbfa3eaec) at kernel/qapplication_x11.cpp:3273
#32 0xb6a44c6a in x11EventSourceDispatch (s=0x9e38600, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#33 0xb6535b88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#34 0xb65390eb in ?? () from /usr/lib/libglib-2.0.so.0
#35 0xb6539268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#36 0xb7f3e438 in QEventDispatcherGlib::processEvents (this=0x9e34d58, flags={i = -1079776088}) at kernel/qeventdispatcher_glib.cpp:323
#37 0xb6a44365 in QGuiEventDispatcherGlib::processEvents (this=0x9e34d58, flags={i = -1079776040}) at kernel/qguieventdispatcher_glib.cpp:202
#38 0xb7f1106a in QEventLoop::processEvents (this=0xbfa3ed50, flags={i = -1079775976}) at kernel/qeventloop.cpp:149
#39 0xb7f114aa in QEventLoop::exec (this=0xbfa3ed50, flags={i = -1079775912}) at kernel/qeventloop.cpp:200
#40 0xb7f13959 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:880
#41 0xb69a2d17 in QApplication::exec () at kernel/qapplication.cpp:3553
#42 0xb3bb6510 in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#43 0x0804e1c0 in launch (argc=1, _name=0x9dfcfec "/usr/bin/plasma-desktop", args=0x9dfd004 "", cwd=0x0, envc=0, envs=0x9dfd008 "", 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=0xbfa3f544, envp=0xbfa3f550) at /build/buildd/kde4libs-4.2.95/kinit/kinit.cpp:1784

Reported using DrKonqi