Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.1 (KDE 4.3.1) "release 163"
Qt Version: 4.5.3
Operating System: Linux 2.6.31-rc8-6-default x86_64
Distribution: "openSUSE 11.2 Milestone 7 (x86_64)"

What I was doing when the application crashed:
I was using Konsole for testinh Linux-HA, so nothing related to KDE, when I attempted to switch to Firefox in Plasma panel, crash occurred.

 -- Backtrace:
Application: Pracovní plocha Plasma (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f589b09d750 (LWP 5837))]

Thread 2 (Thread 0x7f587c70d910 (LWP 5838)):
#0  0x00007f589a891049 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f589ab014fb in wait (time=<value optimized out>, this=<value optimized out>) at thread/qwaitcondition_unix.cpp:87
#2  QWaitCondition::wait (time=<value optimized out>, this=<value optimized out>) at thread/qwaitcondition_unix.cpp:159
#3  0x00007f5896fda96c in QHostInfoAgent::run (this=0xf830a0) at kernel/qhostinfo.cpp:260
#4  0x00007f589ab00445 in QThreadPrivate::start (arg=0xf830a0) at thread/qthread_unix.cpp:188
#5  0x00007f589a88c65d in start_thread () from /lib64/libpthread.so.0
#6  0x00007f589829fd6d in clone () from /lib64/libc.so.6
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f589b09d750 (LWP 5837)):
[KCrash Handler]
#5  itemTopMargin (this=<value optimized out>) at /usr/src/debug/kdebase-workspace-4.3.1/plasma/applets/tasks/tasks.h:92
#6  AbstractTaskItem::basicPreferredSize (this=<value optimized out>) at /usr/src/debug/kdebase-workspace-4.3.1/plasma/applets/tasks/abstracttaskitem.cpp:99
#7  0x00007f587e0ad225 in TaskItemLayout::preferredColumns (this=0xf76350) at /usr/src/debug/kdebase-workspace-4.3.1/plasma/applets/tasks/taskitemlayout.cpp:206
#8  0x00007f587e0adf0d in TaskItemLayout::gridLayoutSize (this=0xf76350) at /usr/src/debug/kdebase-workspace-4.3.1/plasma/applets/tasks/taskitemlayout.cpp:222
#9  0x00007f587e0adf9b in TaskItemLayout::layoutItems (this=0x3d687461702c276c) at /usr/src/debug/kdebase-workspace-4.3.1/plasma/applets/tasks/taskitemlayout.cpp:245
#10 0x00007f587e0aea1f in TaskItemLayout::insert (this=0xf76350, index=<value optimized out>, item=0x20b91e0) at /usr/src/debug/kdebase-workspace-4.3.1/plasma/applets/tasks/taskitemlayout.cpp:125
#11 0x00007f587e0aebf0 in TaskItemLayout::addTaskItem (this=0xf76350, item=0x20b91e0) at /usr/src/debug/kdebase-workspace-4.3.1/plasma/applets/tasks/taskitemlayout.cpp:82
#12 0x00007f587e0ba948 in TaskGroupItem::itemAdded (this=0xf4e920, groupableItem=0x20f0da0) at /usr/src/debug/kdebase-workspace-4.3.1/plasma/applets/tasks/taskgroupitem.cpp:477
#13 0x00007f587e0bafa4 in TaskGroupItem::qt_metacall (this=0xf4e920, _c=InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffee2aae50)
    at /usr/src/debug/kdebase-workspace-4.3.1/build/plasma/applets/tasks/taskgroupitem.moc:113
#14 0x00007f589abfaf0c in QMetaObject::activate (sender=0xf4ec20, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x20e0d62) at kernel/qobject.cpp:3113
#15 0x00007f587e2f277f in TaskManager::TaskGroup::itemAdded (this=0x3d687461702c276c, _t1=0x20f0da0) at /usr/src/debug/kdebase-workspace-4.3.1/build/libs/taskmanager/taskgroup.moc:139
#16 0x00007f587e2f306b in TaskManager::TaskGroup::add (this=0xf4ec20, item=0x20f0da0) at /usr/src/debug/kdebase-workspace-4.3.1/libs/taskmanager/taskgroup.cpp:138
#17 0x00007f587e2e253d in TaskManager::ProgramGroupingStrategy::handleItem (this=0x20fff90, item=0x20f0da0)
    at /usr/src/debug/kdebase-workspace-4.3.1/libs/taskmanager/strategies/programgroupingstrategy.cpp:154
#18 0x00007f587e2dc46a in TaskManager::GroupManagerPrivate::addTask (this=0xf7af70, task=) at /usr/src/debug/kdebase-workspace-4.3.1/libs/taskmanager/groupmanager.cpp:288
#19 0x00007f587e2dcdab in TaskManager::GroupManagerPrivate::actuallyReloadTasks (this=0xf7af70) at /usr/src/debug/kdebase-workspace-4.3.1/libs/taskmanager/groupmanager.cpp:155
#20 0x00007f587e2de629 in TaskManager::GroupManager::qt_metacall (this=0xf76a70, _c=InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffee2ab120)
    at /usr/src/debug/kdebase-workspace-4.3.1/build/libs/taskmanager/groupmanager.moc:108
#21 0x00007f589abfaf0c in QMetaObject::activate (sender=0xf7afd8, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x20e0d62) at kernel/qobject.cpp:3113
#22 0x00007f589abf4eb3 in QObject::event (this=0xf7afd8, e=0x0) at kernel/qobject.cpp:1075
#23 0x00007f58989d631c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#24 0x00007f58989dd5ee in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#25 0x00007f58995d0eb6 in KApplication::notify(QObject*, QEvent*) () from /usr/lib64/libkdeui.so.5
#26 0x00007f589abe5cfc in QCoreApplication::notifyInternal (this=0x6737f0, receiver=0xf7afd8, event=0x7fffee2ab760) at kernel/qcoreapplication.cpp:610
#27 0x00007f589ac114ad in sendEvent (event=<value optimized out>, receiver=<value optimized out>) at kernel/qcoreapplication.h:213
#28 QTimerInfoList::activateTimers (event=<value optimized out>, receiver=<value optimized out>) at kernel/qeventdispatcher_unix.cpp:594
#29 0x00007f589ac0e39d in timerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:165
#30 0x00007f589791fd5e in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#31 0x00007f5897923728 in ?? () from /usr/lib64/libglib-2.0.so.0
#32 0x00007f5897923850 in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#33 0x00007f589ac0e2e6 in QEventDispatcherGlib::processEvents (this=0x618f80, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:328
#34 0x00007f5898a6938e in ?? () from /usr/lib64/libQtGui.so.4
#35 0x00007f589abe4602 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#36 0x00007f589abe49d4 in QEventLoop::exec (this=0x7fffee2abab0, flags=) at kernel/qeventloop.cpp:201
#37 0x00007f589abe6b89 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#38 0x00007f588f38ad6f in kdemain (argc=<value optimized out>, argv=<value optimized out>) at /usr/src/debug/kdebase-workspace-4.3.1/plasma/shells/desktop/main.cpp:50
#39 0x0000000000406f88 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=0x40a4dd "0") at /usr/src/debug/kdelibs-4.3.1/kinit/kinit.cpp:706
#40 0x0000000000407c80 in handle_launcher_request (sock=8, who=<value optimized out>) at /usr/src/debug/kdelibs-4.3.1/kinit/kinit.cpp:1198
#41 0x0000000000408131 in handle_requests (waitForPid=0) at /usr/src/debug/kdelibs-4.3.1/kinit/kinit.cpp:1391
#42 0x0000000000408dfa in main (argc=4, argv=<value optimized out>, envp=<value optimized out>) at /usr/src/debug/kdelibs-4.3.1/kinit/kinit.cpp:1830

Reported using DrKonqi