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 2.6.31-2-generic x86_64
Distribution: Ubuntu karmic (development branch)

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fe96b181760 (LWP 3055))]

Thread 2 (Thread 0x7fe94bf0a950 (LWP 3056)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007fe96abbb49b in QWaitConditionPrivate::wait (this=<value optimized out>, mutex=0x24263f8, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0x24263f8, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:159
#3  0x00007fe966ff771c in QHostInfoAgent::run (this=0x24263e0) at kernel/qhostinfo.cpp:260
#4  0x00007fe96abba3e5 in QThreadPrivate::start (arg=0x24263e0) at thread/qthread_unix.cpp:188
#5  0x00007fe96793b3ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#6  0x00007fe9685221bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fe96b181760 (LWP 3055)):
[KCrash Handler]
#5  0x00007fe94e76d296 in TaskManager::GroupManager::manualSortingRequest(TaskManager::AbstractGroupableItem*, int) () from /usr/lib/libtaskmanager.so.4
#6  0x00007fe94e76b697 in TaskManager::AbstractGroupingStrategy::closeGroup(TaskManager::TaskGroup*) () from /usr/lib/libtaskmanager.so.4
#7  0x00007fe94e7725db in ?? () from /usr/lib/libtaskmanager.so.4
#8  0x00007fe94e773215 in ?? () from /usr/lib/libtaskmanager.so.4
#9  0x00007fe96acb5e1c in QMetaObject::activate (sender=0x2b7adf0, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x1) at kernel/qobject.cpp:3113
#10 0x00007fe94e783ed2 in TaskManager::TaskGroup::itemRemoved(TaskManager::AbstractGroupableItem*) () from /usr/lib/libtaskmanager.so.4
#11 0x00007fe94e7845b1 in TaskManager::TaskGroup::remove(TaskManager::AbstractGroupableItem*) () from /usr/lib/libtaskmanager.so.4
#12 0x00007fe94e76dcc8 in ?? () from /usr/lib/libtaskmanager.so.4
#13 0x00007fe94e7700ca in TaskManager::GroupManager::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libtaskmanager.so.4
#14 0x00007fe96acb5e1c in QMetaObject::activate (sender=0x1efa750, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x1) at kernel/qobject.cpp:3113
#15 0x00007fe94e787345 in TaskManager::TaskManager::taskRemoved(KSharedPtr<TaskManager::Task>) () from /usr/lib/libtaskmanager.so.4
#16 0x00007fe94e788f0d in TaskManager::TaskManager::windowRemoved(unsigned long) () from /usr/lib/libtaskmanager.so.4
#17 0x00007fe94e78a6a7 in TaskManager::TaskManager::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libtaskmanager.so.4
#18 0x00007fe96acb5e1c in QMetaObject::activate (sender=0x1d62020, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x1) at kernel/qobject.cpp:3113
#19 0x00007fe9699beb32 in KWindowSystem::windowRemoved (this=0x0, _t1=39845913) at ./kwindowsystem.moc:127
#20 0x00007fe9699c192a in KWindowSystemPrivate::removeClient (this=0x1d39f20, w=39845913) at ../../kdeui/windowmanagement/kwindowsystem_x11.cpp:249
#21 0x00007fe9699cfd4d in NETRootInfo::update (this=0x1d39f48, dirty_props=<value optimized out>) at ../../kdeui/windowmanagement/netwm.cpp:2135
#22 0x00007fe9699d00b3 in NETRootInfo::event (this=0x1d39f48, event=<value optimized out>, properties=0x7fff42e08a00, properties_size=5) at ../../kdeui/windowmanagement/netwm.cpp:2058
#23 0x00007fe9699c1bdc in KWindowSystemPrivate::x11Event (this=0x1d39f20, ev=0x7fff42e0a3d0) at ../../kdeui/windowmanagement/kwindowsystem_x11.cpp:136
#24 0x00007fe969891846 in KAppX11HackWidget::publicx11Event (this=<value optimized out>, _event=0x7fff42e0a3d0) at ../../kdeui/kernel/kapplication.cpp:911
#25 KApplication::x11EventFilter (this=<value optimized out>, _event=0x7fff42e0a3d0) at ../../kdeui/kernel/kapplication.cpp:961
#26 0x00007fe95fefea57 in ?? () from /usr/lib/libkdeinit4_plasma-desktop.so
#27 0x00007fe968cb6a31 in qt_x11EventFilter (ev=0x7fff42e0a3d0) at kernel/qapplication_x11.cpp:375
#28 0x00007fe968cc7094 in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7fff42e0a3d0) at kernel/qapplication_x11.cpp:3271
#29 0x00007fe968cf131c in x11EventSourceDispatch (s=<value optimized out>, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#30 0x00007fe967b8b8fe in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#31 0x00007fe967b8efd8 in ?? () from /usr/lib/libglib-2.0.so.0
#32 0x00007fe967b8f100 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#33 0x00007fe96acc91f6 in QEventDispatcherGlib::processEvents (this=0x19dd440, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#34 0x00007fe968cf0ace in QGuiEventDispatcherGlib::processEvents (this=0x0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#35 0x00007fe96ac9f572 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#36 0x00007fe96ac9f944 in QEventLoop::exec (this=0x7fff42e0a700, flags=) at kernel/qeventloop.cpp:201
#37 0x00007fe96aca1af9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#38 0x00007fe95feeb6af in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#39 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
#40 0x00000000004079d0 in handle_launcher_request (sock=7, who=<value optimized out>) at ../../kinit/kinit.cpp:1164
#41 0x0000000000407f6f in handle_requests (waitForPid=<value optimized out>) at ../../kinit/kinit.cpp:1357
#42 0x0000000000408b22 in main (argc=2, argv=<value optimized out>, envp=<value optimized out>) at ../../kinit/kinit.cpp:1784

This bug may be a duplicate of or related to bug 199057

Reported using DrKonqi