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 2.6.31-1-generic i686
Distribution: Ubuntu karmic (development branch)

What I was doing when the application crashed:
Plasma crash after closing OO spreadsheet

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 5039)]

Thread 2 (Thread 0xacf4fb90 (LWP 5041)):
#0  0x00dcf422 in __kernel_vsyscall ()
#1  0x005100e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x0047755d in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0x0015fdf7 in QWaitCondition::wait (this=0xa43e538, mutex=0xa43e534, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  0x0094b8e2 in QHostInfoAgent::run (this=0xa43e528) at kernel/qhostinfo.cpp:260
#5  0x0015edc2 in QThreadPrivate::start (arg=0xa43e528) at thread/qthread_unix.cpp:188
#6  0x0050c4ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0x0046870e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb8015930 (LWP 5039)):
[KCrash Handler]
#6  0x029342aa in TaskManager::GroupManager::manualSortingRequest () from /usr/lib/libtaskmanager.so.4
#7  0x02932324 in TaskManager::AbstractGroupingStrategy::closeGroup () from /usr/lib/libtaskmanager.so.4
#8  0x02939c3d in ?? () from /usr/lib/libtaskmanager.so.4
#9  0x0293a911 in ?? () from /usr/lib/libtaskmanager.so.4
#10 0x00265343 in QMetaObject::activate (sender=0xa49ef78, from_signal_index=22, to_signal_index=22, argv=0xbfe07ad8) at kernel/qobject.cpp:3113
#11 0x00265fa2 in QMetaObject::activate (sender=0xa49ef78, m=0x2962bf4, local_signal_index=1, argv=0xbfe07ad8) at kernel/qobject.cpp:3187
#12 0x0294d633 in TaskManager::TaskGroup::itemRemoved () from /usr/lib/libtaskmanager.so.4
#13 0x0294de5b in TaskManager::TaskGroup::remove () from /usr/lib/libtaskmanager.so.4
#14 0x02934e05 in ?? () from /usr/lib/libtaskmanager.so.4
#15 0x0293743b in TaskManager::GroupManager::qt_metacall () from /usr/lib/libtaskmanager.so.4
#16 0x00265343 in QMetaObject::activate (sender=0xa171318, from_signal_index=5, to_signal_index=5, argv=0xbfe07ca8) at kernel/qobject.cpp:3113
#17 0x00265fa2 in QMetaObject::activate (sender=0xa171318, m=0x2962dbc, local_signal_index=1, argv=0xbfe07ca8) at kernel/qobject.cpp:3187
#18 0x02951033 in TaskManager::TaskManager::taskRemoved () from /usr/lib/libtaskmanager.so.4
#19 0x02952db2 in TaskManager::TaskManager::windowRemoved () from /usr/lib/libtaskmanager.so.4
#20 0x029546ff in TaskManager::TaskManager::qt_metacall () from /usr/lib/libtaskmanager.so.4
#21 0x00265343 in QMetaObject::activate (sender=0xa06c038, from_signal_index=6, to_signal_index=6, argv=0xbfe07e28) at kernel/qobject.cpp:3113
#22 0x00265fa2 in QMetaObject::activate (sender=0xa06c038, m=0x165a28c, local_signal_index=2, argv=0xbfe07e28) at kernel/qobject.cpp:3187
#23 0x015a7703 in KWindowSystem::windowRemoved (this=0xa06c038, _t1=44040364) at ./kwindowsystem.moc:127
#24 0x015aa966 in KWindowSystemPrivate::removeClient (this=0x9ffe768, w=44040364) at ../../kdeui/windowmanagement/kwindowsystem_x11.cpp:249
#25 0x015b9665 in NETRootInfo::update (this=<value optimized out>, dirty_props=0xbfe07f98) at ../../kdeui/windowmanagement/netwm.cpp:2135
#26 0x015b9997 in NETRootInfo::event (this=0x9ffe77c, event=<value optimized out>, properties=0xbfe08084, properties_size=5) at ../../kdeui/windowmanagement/netwm.cpp:2058
#27 0x015aac01 in KWindowSystemPrivate::x11Event (this=0x9ffe768, ev=0xbfe0968c) at ../../kdeui/windowmanagement/kwindowsystem_x11.cpp:136
#28 0x01456d76 in KApplication::x11EventFilter (this=0x9e0df60, _event=0xbfe0968c) at ../../kdeui/kernel/kapplication.cpp:911
#29 0x0275c98a in ?? () from /usr/lib/libkdeinit4_plasma-desktop.so
#30 0x048c39d0 in qt_x11EventFilter (ev=0xbfe0968c) at kernel/qapplication_x11.cpp:375
#31 0x048d4f75 in QApplication::x11ProcessEvent (this=0x9e0df60, event=0xbfe0968c) at kernel/qapplication_x11.cpp:3271
#32 0x049030c2 in x11EventSourceDispatch (s=0x9e46100, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#33 0x00845b18 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#34 0x008490b0 in ?? () from /usr/lib/libglib-2.0.so.0
#35 0x008491e3 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#36 0x0027a10c in QEventDispatcherGlib::processEvents (this=0x9e40a80, flags={i = 36}) at kernel/qeventdispatcher_glib.cpp:327
#37 0x049027a5 in QGuiEventDispatcherGlib::processEvents (this=0x9e40a80, flags={i = 36}) at kernel/qguieventdispatcher_glib.cpp:202
#38 0x0024dd59 in QEventLoop::processEvents (this=0xbfe09984, flags=) at kernel/qeventloop.cpp:149
#39 0x0024e1aa in QEventLoop::exec (this=0xbfe09984, flags={i = 0}) at kernel/qeventloop.cpp:201
#40 0x0025061f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#41 0x04861ab7 in QApplication::exec () at kernel/qapplication.cpp:3525
#42 0x02746a7d in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#43 0x0804dd78 in launch (argc=<value optimized out>, _name=<value optimized out>, args=<value optimized out>, cwd=0x0, envc=0, envs=0x9e054f0 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x8051189 "0") at ../../kinit/kinit.cpp:672
#44 0x0804e985 in handle_launcher_request (sock=<value optimized out>, who=<value optimized out>) at ../../kinit/kinit.cpp:1164
#45 0x0804ef13 in handle_requests (waitForPid=<value optimized out>) at ../../kinit/kinit.cpp:1357
#46 0x0804fb5f in main (argc=2, argv=0xbfe0a1d4, envp=0xbfe0a1e0) at ../../kinit/kinit.cpp:1784

This bug may be a duplicate of or related to bug 198682

Reported using DrKonqi