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

What I was doing when the application crashed:
i did nothing special, just tried to close synaptic

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 4242)]

Thread 2 (Thread 0xa7f4ab90 (LWP 4249)):
#0  0xb7feb430 in __kernel_vsyscall ()
#1  0xb64d90e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb66b92ed in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb7de15b2 in QWaitCondition::wait (this=0x98d1e38, mutex=0x98d1e34, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  0xb7725ae2 in QHostInfoAgent::run (this=0x98d1e28) at kernel/qhostinfo.cpp:260
#5  0xb7de056e in QThreadPrivate::start (arg=0x98d1e28) at thread/qthread_unix.cpp:189
#6  0xb64d54ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb66aa49e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb5fe3a10 (LWP 4242)):
[KCrash Handler]
#6  TaskManager::GroupManager::manualSortingRequest (this=0x0, taskItem=0x9b3e640, newIndex=0) at /build/buildd/kdebase-workspace-4.2.95/libs/taskmanager/groupmanager.cpp:363
#7  0xa855931b in TaskManager::AbstractGroupingStrategy::closeGroup (this=0x9aa8458, group=0x975bee0) at /build/buildd/kdebase-workspace-4.2.95/libs/taskmanager/abstractgroupingstrategy.cpp:167
#8  0xa8560f27 in TaskManager::ProgramGroupingStrategy::checkGroup (this=0x9aa8458) at /build/buildd/kdebase-workspace-4.2.95/libs/taskmanager/strategies/programgroupingstrategy.cpp:204
#9  0xa8561e5b in TaskManager::ProgramGroupingStrategy::qt_metacall (this=0x9aa8458, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0xbf804d6c)
    at /build/buildd/kdebase-workspace-4.2.95/obj-i486-linux-gnu/libs/taskmanager/programgroupingstrategy.moc:68
#10 0xb7eeaa58 in QMetaObject::activate (sender=0x975bee0, from_signal_index=22, to_signal_index=22, argv=0xbf804d6c) at kernel/qobject.cpp:3120
#11 0xb7eeb6e2 in QMetaObject::activate (sender=0x975bee0, m=0xa8583b74, local_signal_index=1, argv=0xbf804d6c) at kernel/qobject.cpp:3194
#12 0xa8574d83 in TaskManager::TaskGroup::itemRemoved (this=0x975bee0, _t1=0x9b06888) at /build/buildd/kdebase-workspace-4.2.95/obj-i486-linux-gnu/libs/taskmanager/taskgroup.moc:146
#13 0xa85757ab in TaskManager::TaskGroup::remove (this=0x975bee0, item=0x9b06888) at /build/buildd/kdebase-workspace-4.2.95/libs/taskmanager/taskgroup.cpp:182
#14 0xa855bba5 in TaskManager::GroupManagerPrivate::removeTask (this=0x9758590, task={d = 0xbf804e1c}) at /build/buildd/kdebase-workspace-4.2.95/libs/taskmanager/groupmanager.cpp:311
#15 0xa855e46a in TaskManager::GroupManager::qt_metacall (this=0x9471ae0, _c=QMetaObject::InvokeMetaMethod, _id=11, _a=0xbf804efc)
    at /build/buildd/kdebase-workspace-4.2.95/obj-i486-linux-gnu/libs/taskmanager/groupmanager.moc:105
#16 0xb7eeaa58 in QMetaObject::activate (sender=0x942e918, from_signal_index=5, to_signal_index=5, argv=0xbf804efc) at kernel/qobject.cpp:3120
#17 0xb7eeb6e2 in QMetaObject::activate (sender=0x942e918, m=0xa8583d3c, local_signal_index=1, argv=0xbf804efc) at kernel/qobject.cpp:3194
#18 0xa8578823 in TaskManager::TaskManager::taskRemoved (this=0x942e918, _t1={d = 0xbf804f44}) at /build/buildd/kdebase-workspace-4.2.95/obj-i486-linux-gnu/libs/taskmanager/taskmanager.moc:162
#19 0xa857a0cf in TaskManager::TaskManager::windowRemoved (this=0x942e918, w=58727703) at /build/buildd/kdebase-workspace-4.2.95/libs/taskmanager/taskmanager.cpp:279
#20 0xa857bfec in TaskManager::TaskManager::qt_metacall (this=0x942e918, _c=QMetaObject::InvokeMetaMethod, _id=7, _a=0xbf80506c)
    at /build/buildd/kdebase-workspace-4.2.95/obj-i486-linux-gnu/libs/taskmanager/taskmanager.moc:110
#21 0xb7eeaa58 in QMetaObject::activate (sender=0x938c330, from_signal_index=6, to_signal_index=6, argv=0xbf80506c) at kernel/qobject.cpp:3120
#22 0xb7eeb6e2 in QMetaObject::activate (sender=0x938c330, m=0xb765d26c, local_signal_index=2, argv=0xbf80506c) at kernel/qobject.cpp:3194
#23 0xb75f5853 in KWindowSystem::windowRemoved (this=0x938c330, _t1=58727703) at /build/buildd/kde4libs-4.2.95/obj-i486-linux-gnu/kdeui/kwindowsystem.moc:127
#24 0xb75f80d6 in KWindowSystemPrivate::removeClient (this=0x922a940, w=58727703) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/kwindowsystem_x11.cpp:249
#25 0xb76077c2 in NETRootInfo::update (this=0x922a954, dirty_props=0xbf8051b4) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/netwm.cpp:2131
#26 0xb7607b3f in NETRootInfo::event (this=0x922a954, event=0xbf80691c, properties=0xbf805298, properties_size=5) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/netwm.cpp:2058
#27 0xb75f836d in KWindowSystemPrivate::x11Event (this=0x922a940, ev=0xbf8068bc) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/kwindowsystem_x11.cpp:136
#28 0xb74a86f9 in KApplication::x11EventFilter (this=0x9128850, _event=0xbf8068bc) at /build/buildd/kde4libs-4.2.95/kdeui/kernel/kapplication.cpp:911
#29 0xb3bb8e37 in PlasmaApp::x11EventFilter (this=0x9128850, event=0xbf8068bc) at /build/buildd/kdebase-workspace-4.2.95/plasma/shells/desktop/plasmaapp.cpp:490
#30 0xb69d2c5e in qt_x11EventFilter (ev=0xbf8068bc) at kernel/qapplication_x11.cpp:375
#31 0xb69e54ee in QApplication::x11ProcessEvent (this=0x9128850, event=0xbf8068bc) at kernel/qapplication_x11.cpp:3287
#32 0xb6a1206a in x11EventSourceDispatch (s=0x9131470, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#33 0xb6522b88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#34 0xb65260eb in ?? () from /usr/lib/libglib-2.0.so.0
#35 0xb6526268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#36 0xb7f001d8 in QEventDispatcherGlib::processEvents (this=0x912bef0, flags={i = -1082103176}) at kernel/qeventdispatcher_glib.cpp:324
#37 0xb6a11765 in QGuiEventDispatcherGlib::processEvents (this=0x912bef0, flags={i = -1082103128}) at kernel/qguieventdispatcher_glib.cpp:202
#38 0xb7ed2dda in QEventLoop::processEvents (this=0xbf806b20, flags={i = -1082103064}) at kernel/qeventloop.cpp:149
#39 0xb7ed321a in QEventLoop::exec (this=0xbf806b20, flags={i = -1082103000}) at kernel/qeventloop.cpp:200
#40 0xb7ed56c9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#41 0xb696fa47 in QApplication::exec () at kernel/qapplication.cpp:3526
#42 0xb3ba3510 in kdemain (argc=1, argv=0x90cba60) at /build/buildd/kdebase-workspace-4.2.95/plasma/shells/desktop/main.cpp:50
#43 0x0804e1c0 in launch (argc=1, _name=0x91157bc "/usr/bin/plasma-desktop", args=0x91157d4 "", cwd=0x0, envc=0, envs=0x91157d8 "", 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=0xbf807314, envp=0xbf807320) at /build/buildd/kde4libs-4.2.95/kinit/kinit.cpp:1784

Reported using DrKonqi