Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.1 (KDE 4.3.1)
Qt Version: 4.5.2
Operating System: Linux 2.6.30.8-64.fc11.i686.PAE i686
Distribution: "Fedora release 11 (Leonidas)"

What I was doing when the application crashed:
there have been many crashes nothing more to add.hope the crash report
help the guys find the bug. thanks

 -- Backtrace:
Application: Plasma Workspace (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb803e780 (LWP 22413))]

Thread 3 (Thread 0xacdb1b70 (LWP 22414)):
#0  0x00f29424 in __kernel_vsyscall ()
#1  0x00946fa5 in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S:122
#2  0x02aa8337 in QWaitConditionPrivate::wait (time=<value optimized out>, this=<value optimized out>) at thread/qwaitcondition_unix.cpp:87
#3  QWaitCondition::wait (time=<value optimized out>, this=<value optimized out>) at thread/qwaitcondition_unix.cpp:159
#4  0x02d084d2 in QHostInfoAgent::run (this=0x9bf25c8) at kernel/qhostinfo.cpp:260
#5  0x02aa72f2 in QThreadPrivate::start (arg=0x9bf25c8) at thread/qthread_unix.cpp:188
#6  0x00942935 in start_thread (arg=0xacdb1b70) at pthread_create.c:297
#7  0x0087794e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 2 (Thread 0xa9fffb70 (LWP 22426)):
#0  0x00972f86 in *__GI_clock_gettime (clock_id=9924596, tp=0xa9ffef58) at ../sysdeps/unix/clock_gettime.c:100
#1  0x02bc41b3 in QTimerInfoList::getTime (this=0xac203284, t=@0xac2032a8) at kernel/qeventdispatcher_unix.cpp:339
#2  0x02bc43a1 in QTimerInfoList::updateCurrentTime (this=0xac203284) at kernel/qeventdispatcher_unix.cpp:297
#3  0x02bc4e2c in QTimerInfoList::timerWait (this=0xac203284, tm=@0xa9ffefe4) at kernel/qeventdispatcher_unix.cpp:420
#4  0x02bc27d0 in timerSourcePrepare (source=0xac203250, timeout=0xa9fff04c) at kernel/qeventdispatcher_glib.cpp:141
#5  0x027f9240 in IA__g_main_context_prepare (context=0xac201468, priority=0xa9fff0cc) at gmain.c:2144
#6  0x027f9601 in g_main_context_iterate (context=0xac201468, block=<value optimized out>, dispatch=1, self=0xa5c532e0) at gmain.c:2435
#7  0x027f9b13 in IA__g_main_context_iteration (context=0xac201468, may_block=1) at gmain.c:2518
#8  0x02bc2627 in QEventDispatcherGlib::processEvents (this=0xac200dd8, flags={i = 36}) at kernel/qeventdispatcher_glib.cpp:329
#9  0x02b960d9 in QEventLoop::processEvents (this=0xa9fff214, flags={i = 36}) at kernel/qeventloop.cpp:149
#10 0x02b9652a in QEventLoop::exec (this=0xa9fff214, flags={i = 0}) at kernel/qeventloop.cpp:201
#11 0x02aa3ff3 in QThread::exec (this=0xa10fbf8) at thread/qthread.cpp:487
#12 0x01396cdc in Marble::GpsdThread::run (this=0xa10fbf8) at /usr/src/debug/kdeedu-4.3.1/marble/src/plugins/positionprovider/gpsd/GpsdThread.cpp:27
#13 0x02aa72f2 in QThreadPrivate::start (arg=0xa10fbf8) at thread/qthread_unix.cpp:188
#14 0x00942935 in start_thread (arg=0xa9fffb70) at pthread_create.c:297
#15 0x0087794e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb803e780 (LWP 22413)):
[KCrash Handler]
#6  QGraphicsLayoutItem::isLayout (this=0x9c13dd0) at graphicsview/qgraphicslayoutitem.cpp:784
#7  0x0390c1d7 in QGraphicsGridLayout::addItem (this=0x9806b60, item=0xa8a4dd8, row=176836056, column=163659216, rowSpan=1, columnSpan=1, alignment={i = 0})
    at graphicsview/qgraphicsgridlayout.cpp:158
#8  0x08104722 in TaskItemLayout::layoutItems (this=0x9806b60) at /usr/src/debug/kdebase-workspace-4.3.1/plasma/applets/tasks/taskitemlayout.cpp:370
#9  0x0810d6d8 in TaskGroupItem::constraintsChanged (this=0x9c1a218, constraints={i = 8}) at /usr/src/debug/kdebase-workspace-4.3.1/plasma/applets/tasks/taskgroupitem.cpp:726
#10 0x08112975 in TaskGroupItem::qt_metacall (this=0x9c1a218, _c=QMetaObject::InvokeMetaMethod, _id=26, _a=0xbf97aa78)
    at /usr/src/debug/kdebase-workspace-4.3.1/i586-redhat-linux-gnu/plasma/applets/tasks/taskgroupitem.moc:110
#11 0x02bad853 in QMetaObject::activate (sender=0x9a77c60, from_signal_index=36, to_signal_index=36, argv=0xbf97aa78) at kernel/qobject.cpp:3113
#12 0x02bae4b2 in QMetaObject::activate (sender=0x9a77c60, m=0x8118128, local_signal_index=0, argv=0xbf97aa78) at kernel/qobject.cpp:3187
#13 0x080fe1e3 in Tasks::constraintsChanged (this=0x9a77c60, _t1={i = 8}) at /usr/src/debug/kdebase-workspace-4.3.1/i586-redhat-linux-gnu/plasma/applets/tasks/tasks.moc:95
#14 0x080fe7b9 in Tasks::constraintsEvent (this=0x9a77c60, constraints={i = 8}) at /usr/src/debug/kdebase-workspace-4.3.1/plasma/applets/tasks/tasks.cpp:173
#15 0x0611265b in Plasma::Applet::flushPendingConstraintsEvents (this=0x9a77c60) at /usr/src/debug/kdelibs-4.3.1/plasma/applet.cpp:1163
#16 0x06112d98 in Plasma::Applet::timerEvent (this=0x9a77c60, event=0xbf97b090) at /usr/src/debug/kdelibs-4.3.1/plasma/applet.cpp:2110
#17 0x02ba796f in QObject::event (this=0x9a77c60, e=0xbf97b090) at kernel/qobject.cpp:1075
#18 0x038f5bf4 in QGraphicsWidget::event (this=0x9a77c60, event=0xbf97b090) at graphicsview/qgraphicswidget.cpp:1340
#19 0x0329e974 in QApplicationPrivate::notify_helper (this=0x96cf650, receiver=0x9a77c60, e=0xbf97b090) at kernel/qapplication.cpp:4056
#20 0x032a60e9 in QApplication::notify (this=0x96c80a8, receiver=0x9a77c60, e=0xbf97b090) at kernel/qapplication.cpp:3603
#21 0x03cec60a in KApplication::notify (this=0x96c80a8, receiver=0x9a77c60, event=0xbf97b090) at /usr/src/debug/kdelibs-4.3.1/kdeui/kernel/kapplication.cpp:302
#22 0x02b97b0b in QCoreApplication::notifyInternal (this=0x96c80a8, receiver=0x9a77c60, event=0xbf97b090) at kernel/qcoreapplication.cpp:610
#23 0x02bc4d7e in QCoreApplication::sendEvent (event=<value optimized out>, receiver=<value optimized out>) at kernel/qcoreapplication.h:213
#24 QTimerInfoList::activateTimers (event=<value optimized out>, receiver=<value optimized out>) at kernel/qeventdispatcher_unix.cpp:572
#25 0x02bc26a0 in timerSourceDispatch (source=0x96d6350) at kernel/qeventdispatcher_glib.cpp:165
#26 0x027f6308 in g_main_dispatch (context=<value optimized out>) at gmain.c:1824
#27 IA__g_main_context_dispatch (context=<value optimized out>) at gmain.c:2377
#28 0x027f99e0 in g_main_context_iterate (context=0x96d5a90, block=<value optimized out>, dispatch=1, self=0x96cf0c0) at gmain.c:2455
#29 0x027f9b13 in IA__g_main_context_iteration (context=0x96d5a90, may_block=1) at gmain.c:2518
#30 0x02bc25ec in QEventDispatcherGlib::processEvents (this=0x96b2e60, flags={i = 36}) at kernel/qeventdispatcher_glib.cpp:327
#31 0x0333dcb5 in QGuiEventDispatcherGlib::processEvents (this=0x96b2e60, flags={i = 36}) at kernel/qguieventdispatcher_glib.cpp:202
#32 0x02b960d9 in QEventLoop::processEvents (this=0xbf97b354, flags={i = 36}) at kernel/qeventloop.cpp:149
#33 0x02b9652a in QEventLoop::exec (this=0xbf97b354, flags={i = 0}) at kernel/qeventloop.cpp:201
#34 0x02b989af in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#35 0x0329e7f7 in QApplication::exec () at kernel/qapplication.cpp:3525
#36 0x042e742d in kdemain (argc=1, argv=0xbf97b534) at /usr/src/debug/kdebase-workspace-4.3.1/plasma/shells/desktop/main.cpp:50
#37 0x080486fb in main (argc=1, argv=0xbf97b534) at /usr/src/debug/kdebase-workspace-4.3.1/i586-redhat-linux-gnu/plasma/shells/desktop/plasma-desktop_dummy.cpp:3

Reported using DrKonqi