Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-15-generic i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
I modified an email adress in Adressbook of Kmail and just clicked exit then this crash... Were opened: Okular, Firefox and Dolphin. It's the first time! Yes and it's the first time that i used adressbook of kmail for modifying since i installed i updated to Kubuntu 9.10.
thanks

 -- Backtrace:
Application: Espace de travail Plasma (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb773e700 (LWP 2012))]

Thread 2 (Thread 0xac508b70 (LWP 2013)):
#0  0x0079b422 in __kernel_vsyscall ()
#1  0x00138e15 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x0087578d in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0x003ffe67 in QWaitConditionPrivate::wait (this=0xa420058, mutex=0xa420054, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  QWaitCondition::wait (this=0xa420058, mutex=0xa420054, time=4294967295) at thread/qwaitcondition_unix.cpp:159
#5  0x06e69922 in QHostInfoAgent::run (this=0xa420048) at kernel/qhostinfo.cpp:260
#6  0x003fee32 in QThreadPrivate::start (arg=0xa420048) at thread/qthread_unix.cpp:188
#7  0x0013480e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#8  0x008687ee in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb773e700 (LWP 2012)):
[KCrash Handler]
#6  0x025ba627 in ?? () from /usr/lib/kde4/plasma_applet_tasks.so
#7  0x025bac34 in ?? () from /usr/lib/kde4/plasma_applet_tasks.so
#8  0x025bacec in ?? () from /usr/lib/kde4/plasma_applet_tasks.so
#9  0x025c81df in ?? () from /usr/lib/kde4/plasma_applet_tasks.so
#10 0x025c867f in ?? () from /usr/lib/kde4/plasma_applet_tasks.so
#11 0x00505263 in QMetaObject::activate (sender=0xa29d790, from_signal_index=24, to_signal_index=24, argv=0xbfc80b78) at kernel/qobject.cpp:3113
#12 0x00505ec2 in QMetaObject::activate (sender=0xa29d790, m=0x7f6fbf4, local_signal_index=3, argv=0xbfc80b78) at kernel/qobject.cpp:3187
#13 0x07f61353 in TaskManager::TaskGroup::itemPositionChanged(TaskManager::AbstractGroupableItem*) () from /usr/lib/libtaskmanager.so.4
#14 0x07f63913 in TaskManager::TaskGroup::moveItem(int, int) () from /usr/lib/libtaskmanager.so.4
#15 0x07f47bd1 in TaskManager::AbstractSortingStrategy::check(TaskManager::AbstractGroupableItem*) () from /usr/lib/libtaskmanager.so.4
#16 0x07f47f9b in TaskManager::AbstractSortingStrategy::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libtaskmanager.so.4
#17 0x07f4c8b2 in ?? () from /usr/lib/libtaskmanager.so.4
#18 0x00505263 in QMetaObject::activate (sender=0xa67b220, from_signal_index=21, to_signal_index=21, argv=0x0) at kernel/qobject.cpp:3113
#19 0x00505ec2 in QMetaObject::activate (sender=0xa67b220, m=0x7f6fcdc, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3187
#20 0x07f63b27 in TaskManager::TaskItem::gotTaskPointer() () from /usr/lib/libtaskmanager.so.4
#21 0x07f6433c in TaskManager::TaskItem::setTaskPointer(KSharedPtr<TaskManager::Task>) () from /usr/lib/libtaskmanager.so.4
#22 0x07f492a2 in ?? () from /usr/lib/libtaskmanager.so.4
#23 0x07f4b343 in TaskManager::GroupManager::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libtaskmanager.so.4
#24 0x00505263 in QMetaObject::activate (sender=0xa2bbde8, from_signal_index=4, to_signal_index=4, argv=0xbfc80fa8) at kernel/qobject.cpp:3113
#25 0x00505ec2 in QMetaObject::activate (sender=0xa2bbde8, m=0x7f6fdbc, local_signal_index=0, argv=0xbfc80fa8) at kernel/qobject.cpp:3187
#26 0x07f64e83 in TaskManager::TaskManager::taskAdded(KSharedPtr<TaskManager::Task>) () from /usr/lib/libtaskmanager.so.4
#27 0x07f67063 in TaskManager::TaskManager::windowAdded(unsigned long) () from /usr/lib/libtaskmanager.so.4
#28 0x07f684df in TaskManager::TaskManager::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libtaskmanager.so.4
#29 0x00505263 in QMetaObject::activate (sender=0xa1328b8, from_signal_index=5, to_signal_index=5, argv=0xbfc81178) at kernel/qobject.cpp:3113
#30 0x00505ec2 in QMetaObject::activate (sender=0xa1328b8, m=0x134f26c, local_signal_index=1, argv=0xbfc81178) at kernel/qobject.cpp:3187
#31 0x012e6e23 in KWindowSystem::windowAdded (this=0xa1328b8, _t1=67108889) at ./kwindowsystem.moc:120
#32 0x012e9ee6 in KWindowSystemPrivate::addClient (this=0xa12db90, w=67108889) at ../../kdeui/windowmanagement/kwindowsystem_x11.cpp:229
#33 0x012f8577 in NETRootInfo::update (this=0xa12dba4, dirty_props=0xbfc81328) at ../../kdeui/windowmanagement/netwm.cpp:2186
#34 0x012f90b7 in NETRootInfo::event (this=0xa12dba4, event=<value optimized out>, properties=0xbfc81414, properties_size=5) at ../../kdeui/windowmanagement/netwm.cpp:2058
#35 0x012ea2d1 in KWindowSystemPrivate::x11Event (this=0xa12db90, ev=0xbfc82a1c) at ../../kdeui/windowmanagement/kwindowsystem_x11.cpp:136
#36 0x01196f86 in KAppX11HackWidget::publicx11Event (this=0x9f32fc8, _event=0xbfc82a1c) at ../../kdeui/kernel/kapplication.cpp:911
#37 KApplication::x11EventFilter (this=0x9f32fc8, _event=0xbfc82a1c) at ../../kdeui/kernel/kapplication.cpp:961
#38 0x028bb71a in ?? () from /usr/lib/libkdeinit4_plasma-desktop.so
#39 0x03901d70 in qt_x11EventFilter (ev=0xbfc82a1c) at kernel/qapplication_x11.cpp:375
#40 0x03913375 in QApplication::x11ProcessEvent (this=0x9f32fc8, event=0xbfc82a1c) at kernel/qapplication_x11.cpp:3271
#41 0x03941502 in x11EventSourceDispatch (s=0x9f3b9a8, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#42 0x002fce78 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#43 0x00300720 in ?? () from /lib/libglib-2.0.so.0
#44 0x00300853 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#45 0x0051a02c in QEventDispatcherGlib::processEvents (this=0x9f38b88, flags=...) at kernel/qeventdispatcher_glib.cpp:327
#46 0x03940be5 in QGuiEventDispatcherGlib::processEvents (this=0x9f38b88, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#47 0x004edc79 in QEventLoop::processEvents (this=0xbfc82d14, flags=) at kernel/qeventloop.cpp:149
#48 0x004ee0ca in QEventLoop::exec (this=0xbfc82d14, flags=...) at kernel/qeventloop.cpp:201
#49 0x004f053f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#50 0x0389fdd7 in QApplication::exec () at kernel/qapplication.cpp:3525
#51 0x028a580d in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#52 0x0804dde1 in launch (argc=<value optimized out>, _name=<value optimized out>, args=<value optimized out>, cwd=0x0, envc=0, envs=0x9ed8a38 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x80511a5 "0") at ../../kinit/kinit.cpp:677
#53 0x0804ea35 in handle_launcher_request (sock=<value optimized out>, who=<value optimized out>) at ../../kinit/kinit.cpp:1169
#54 0x0804eeac in handle_requests (waitForPid=<value optimized out>) at ../../kinit/kinit.cpp:1362
#55 0x0804fbaf in main (argc=2, argv=0xbfc83574, envp=0xbfc83580) at ../../kinit/kinit.cpp:1793

Reported using DrKonqi