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 2.6.31-14-generic x86_64
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
I'm doing nothing !!!!
Is crashed simply by itself!

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f03883d9750 (LWP 1920))]

Thread 2 (Thread 0x7f03688b1910 (LWP 1966)):
#0  0x00007f0384b845a9 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f0387e0a4fb in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#2  0x00007f038424178c in ?? () from /usr/lib/libQtNetwork.so.4
#3  0x00007f0387e09445 in ?? () from /usr/lib/libQtCore.so.4
#4  0x00007f0384b7fa04 in start_thread () from /lib/libpthread.so.0
#5  0x00007f038575f7bd in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f03883d9750 (LWP 1920)):
[KCrash Handler]
#5  0x00007f0386432207 in QGraphicsItem::update(QRectF const&) () from /usr/lib/libQtGui.so.4
#6  0x00007f035c7d4dd2 in ?? () from /usr/lib/pymodules/python2.6/PyQt4/QtGui.so
#7  0x00007f035d593cf4 in PyEval_EvalFrameEx () from /usr/lib/libpython2.6.so.1.0
#8  0x00007f035d595975 in PyEval_EvalCodeEx () from /usr/lib/libpython2.6.so.1.0
#9  0x00007f035d51de80 in ?? () from /usr/lib/libpython2.6.so.1.0
#10 0x00007f035d4f1e53 in PyObject_Call () from /usr/lib/libpython2.6.so.1.0
#11 0x00007f035d50264f in ?? () from /usr/lib/libpython2.6.so.1.0
#12 0x00007f035d4f1e53 in PyObject_Call () from /usr/lib/libpython2.6.so.1.0
#13 0x00007f035d58de43 in PyEval_CallObjectWithKeywords () from /usr/lib/libpython2.6.so.1.0
#14 0x00007f035ccdf678 in sip_api_invoke_slot () from /usr/lib/pymodules/python2.6/sip.so
#15 0x00007f035d01d846 in ?? () from /usr/lib/pymodules/python2.6/PyQt4/QtCore.so
#16 0x00007f035d01d95c in ?? () from /usr/lib/pymodules/python2.6/PyQt4/QtCore.so
#17 0x00007f035d01da1a in ?? () from /usr/lib/pymodules/python2.6/PyQt4/QtCore.so
#18 0x00007f0387f04ddc in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#19 0x00007f035cf78c75 in ?? () from /usr/lib/pymodules/python2.6/PyQt4/QtCore.so
#20 0x00007f0387efed83 in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#21 0x00007f035cf78c13 in ?? () from /usr/lib/pymodules/python2.6/PyQt4/QtCore.so
#22 0x00007f0385e9fefc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#23 0x00007f0385ea71ce in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#24 0x00007f0386ad6ab6 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#25 0x00007f0387eefc2c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#26 0x00007f0387f1a862 in ?? () from /usr/lib/libQtCore.so.4
#27 0x00007f0387f1825d in ?? () from /usr/lib/libQtCore.so.4
#28 0x00007f0384dd0bbe in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#29 0x00007f0384dd4588 in ?? () from /lib/libglib-2.0.so.0
#30 0x00007f0384dd46b0 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#31 0x00007f0387f181a6 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#32 0x00007f0385f344be in ?? () from /usr/lib/libQtGui.so.4
#33 0x00007f0387eee532 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#34 0x00007f0387eee904 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#35 0x00007f0387ef0ab9 in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#36 0x00007f037cf5c4cf in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#37 0x0000000000406da8 in _start ()

Reported using DrKonqi