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

What I was doing when the application crashed:
Plasma crasehs several times a day. Things I did before it happened:
- closing Okular
- closing Amarok
- sending mail
- trying to start an application with KRunner
......

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 3746)]

Thread 2 (Thread 0xa7f8cb90 (LWP 3749)):
#0  0xb805f430 in __kernel_vsyscall ()
#1  0xb65280e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb67082ed in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb7e5b9b2 in QWaitCondition::wait (this=0xa1ce480, mutex=0xa1ce47c, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  0xb7797152 in QHostInfoAgent::run (this=0xa1ce470) at kernel/qhostinfo.cpp:260
#5  0xb7e5a96e in QThreadPrivate::start (arg=0xa1ce470) at thread/qthread_unix.cpp:189
#6  0xb65244ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb66f949e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb6032a10 (LWP 3746)):
[KCrash Handler]
#6  0xa861732a in TaskManager::GroupManager::manualSortingRequest () from /usr/lib/libtaskmanager.so.4
#7  0xa861531b in TaskManager::AbstractGroupingStrategy::closeGroup () from /usr/lib/libtaskmanager.so.4
#8  0xa861cf27 in ?? () from /usr/lib/libtaskmanager.so.4
#9  0xa861de5b in ?? () from /usr/lib/libtaskmanager.so.4
#10 0xb7f64ca8 in QMetaObject::activate (sender=0xb2eb240, from_signal_index=22, to_signal_index=22, argv=0xbfe7acfc) at kernel/qobject.cpp:3069
#11 0xb7f65932 in QMetaObject::activate (sender=0xb2eb240, m=0xa863fb74, local_signal_index=1, argv=0xbfe7acfc) at kernel/qobject.cpp:3143
#12 0xa8630d83 in TaskManager::TaskGroup::itemRemoved () from /usr/lib/libtaskmanager.so.4
#13 0xa86317ab in TaskManager::TaskGroup::remove () from /usr/lib/libtaskmanager.so.4
#14 0xa8617ba5 in ?? () from /usr/lib/libtaskmanager.so.4
#15 0xa861a46a in TaskManager::GroupManager::qt_metacall () from /usr/lib/libtaskmanager.so.4
#16 0xb7f64ca8 in QMetaObject::activate (sender=0xa1ef378, from_signal_index=5, to_signal_index=5, argv=0xbfe7ae8c) at kernel/qobject.cpp:3069
#17 0xb7f65932 in QMetaObject::activate (sender=0xa1ef378, m=0xa863fd3c, local_signal_index=1, argv=0xbfe7ae8c) at kernel/qobject.cpp:3143
#18 0xa8634823 in TaskManager::TaskManager::taskRemoved () from /usr/lib/libtaskmanager.so.4
#19 0xa86360cf in TaskManager::TaskManager::windowRemoved () from /usr/lib/libtaskmanager.so.4
#20 0xa8637fec in TaskManager::TaskManager::qt_metacall () from /usr/lib/libtaskmanager.so.4
#21 0xb7f64ca8 in QMetaObject::activate (sender=0x99b7598, from_signal_index=6, to_signal_index=6, argv=0xbfe7affc) at kernel/qobject.cpp:3069
#22 0xb7f65932 in QMetaObject::activate (sender=0x99b7598, m=0xb76cd26c, local_signal_index=2, argv=0xbfe7affc) at kernel/qobject.cpp:3143
#23 0xb7665853 in KWindowSystem::windowRemoved (this=0x99b7598, _t1=71303193) at /build/buildd/kde4libs-4.2.95/obj-i486-linux-gnu/kdeui/kwindowsystem.moc:127
#24 0xb76680d6 in KWindowSystemPrivate::removeClient (this=0x98f02a8, w=71303193) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/kwindowsystem_x11.cpp:249
#25 0xb76777c2 in NETRootInfo::update (this=0x98f02bc, dirty_props=0xbfe7b144) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/netwm.cpp:2131
#26 0xb7677b3f in NETRootInfo::event (this=0x98f02bc, event=0xbfe7b85c, properties=0xbfe7b228, properties_size=5) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/netwm.cpp:2058
#27 0xb766836d in KWindowSystemPrivate::x11Event (this=0x98f02a8, ev=0xbfe7b7fc) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/kwindowsystem_x11.cpp:136
#28 0xb75186f9 in KApplication::x11EventFilter (this=0x97fed70, _event=0xbfe7b7fc) at /build/buildd/kde4libs-4.2.95/kdeui/kernel/kapplication.cpp:911
#29 0xb3c41e37 in ?? () from /usr/lib/libkdeinit4_plasma-desktop.so
#30 0xb6a41f3e in qt_x11EventFilter (ev=0xbfe7b7fc) at kernel/qapplication_x11.cpp:375
#31 0xb6a546a8 in QApplication::x11ProcessEvent (this=0x97fed70, event=0xbfe7b7fc) at kernel/qapplication_x11.cpp:3273
#32 0xb6a80c6a in x11EventSourceDispatch (s=0x9807b00, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#33 0xb6571b88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#34 0xb65750eb in ?? () from /usr/lib/libglib-2.0.so.0
#35 0xb6575268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#36 0xb7f7a438 in QEventDispatcherGlib::processEvents (this=0x98025b8, flags={i = -1075332680}) at kernel/qeventdispatcher_glib.cpp:323
#37 0xb6a80365 in QGuiEventDispatcherGlib::processEvents (this=0x98025b8, flags={i = -1075332632}) at kernel/qguieventdispatcher_glib.cpp:202
#38 0xb7f4d06a in QEventLoop::processEvents (this=0xbfe7ba60, flags={i = -1075332568}) at kernel/qeventloop.cpp:149
#39 0xb7f4d4aa in QEventLoop::exec (this=0xbfe7ba60, flags={i = -1075332504}) at kernel/qeventloop.cpp:200
#40 0xb7f4f959 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:880
#41 0xb69ded17 in QApplication::exec () at kernel/qapplication.cpp:3553
#42 0xb3c2c510 in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#43 0x0804e1c0 in launch (argc=1, _name=0x97eba84 "/usr/bin/plasma-desktop", args=0x97eba9c "", cwd=0x0, envc=0, envs=0x97ebaa0 "", 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=0xbfe7c254, envp=0xbfe7c260) at /build/buildd/kde4libs-4.2.95/kinit/kinit.cpp:1784

Reported using DrKonqi