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 2.6.30.5-43.fc11.i586 i686
Distribution: "Fedora release 11 (Leonidas)"

What I was doing when the application crashed:
 

 -- Backtrace:
Application: Plasma Workspace (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb80277a0 (LWP 19978))]

Thread 2 (Thread 0xacf6eb70 (LWP 19981)):
#0  0x00a6b422 in __kernel_vsyscall ()
#1  0x00c08fa5 in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S:122
#2  0x020ed337 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  0x07c434d2 in QHostInfoAgent::run (this=0x8666600) at kernel/qhostinfo.cpp:260
#5  0x020ec2f2 in QThreadPrivate::start (arg=0x8666600) at thread/qthread_unix.cpp:188
#6  0x00c04935 in start_thread (arg=0xacf6eb70) at pthread_create.c:297
#7  0x005d694e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb80277a0 (LWP 19978)):
[KCrash Handler]
#6  0x04bc031a in QGraphicsLayoutItem::isLayout (this=0x854fba8) at graphicsview/qgraphicslayoutitem.cpp:784
#7  0x04bbf16d in QGraphicsLayoutPrivate::activateRecursive (this=0x854fba8, item=0x87b5190) at graphicsview/qgraphicslayout_p.cpp:189
#8  0x04bbf16d in QGraphicsLayoutPrivate::activateRecursive (this=0x854fba8, item=0x85525c0) at graphicsview/qgraphicslayout_p.cpp:189
#9  0x04bbe956 in QGraphicsLayout::activate (this=0x85525c0) at graphicsview/qgraphicslayout.cpp:258
#10 0x04bbea2c in QGraphicsLayout::widgetEvent (this=0x85525c0, e=0x86e2468) at graphicsview/qgraphicslayout.cpp:366
#11 0x04bc4bb6 in QGraphicsWidget::event (this=0x8552268, event=0x86e2468) at graphicsview/qgraphicswidget.cpp:1262
#12 0x0456d974 in QApplicationPrivate::notify_helper (this=0x80bbe18, receiver=0x8552268, e=0x86e2468) at kernel/qapplication.cpp:4056
#13 0x045750e9 in QApplication::notify (this=0x80a34c0, receiver=0x8552268, e=0x86e2468) at kernel/qapplication.cpp:3603
#14 0x04fbb60a in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#15 0x021dcb0b in QCoreApplication::notifyInternal (this=0x80a34c0, receiver=0x8552268, event=0x86e2468) at kernel/qcoreapplication.cpp:610
#16 0x021dd732 in QCoreApplication::sendEvent (event=<value optimized out>, receiver=<value optimized out>) at kernel/qcoreapplication.h:213
#17 QCoreApplicationPrivate::sendPostedEvents (event=<value optimized out>, receiver=<value optimized out>) at kernel/qcoreapplication.cpp:1247
#18 0x021dd8ed in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1140
#19 0x022079bf in QCoreApplication::sendPostedEvents () at kernel/qcoreapplication.h:218
#20 postEventSourceDispatch () at kernel/qeventdispatcher_glib.cpp:210
#21 0x025d1308 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#22 0x025d49e0 in ?? () from /lib/libglib-2.0.so.0
#23 0x025d4b13 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#24 0x022075ec in QEventDispatcherGlib::processEvents (this=0x808e2c8, flags={i = 36}) at kernel/qeventdispatcher_glib.cpp:327
#25 0x0460ccb5 in QGuiEventDispatcherGlib::processEvents (this=0x808e2c8, flags={i = 36}) at kernel/qguieventdispatcher_glib.cpp:202
#26 0x021db0d9 in QEventLoop::processEvents (this=0xbfa42dc4, flags={i = 36}) at kernel/qeventloop.cpp:149
#27 0x021db52a in QEventLoop::exec (this=0xbfa42dc4, flags={i = 0}) at kernel/qeventloop.cpp:201
#28 0x021dd9af in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#29 0x0456d7f7 in QApplication::exec () at kernel/qapplication.cpp:3525
#30 0x07df942d in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#31 0x080486fb in _start ()

Reported using DrKonqi