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 2.6.31-19-generic x86_64
Distribution: Ubuntu 9.10

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f1c49f7e750 (LWP 1784))]

Thread 2 (Thread 0x7f1c288e3910 (LWP 1785)):
#0  0x00007f1c467355a9 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f1c499bb4fb in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#2  0x00007f1c45df278c in ?? () from /usr/lib/libQtNetwork.so.4
#3  0x00007f1c499ba445 in ?? () from /usr/lib/libQtCore.so.4
#4  0x00007f1c46730a04 in start_thread () from /lib/libpthread.so.0
#5  0x00007f1c4731080d in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f1c49f7e750 (LWP 1784)):
[KCrash Handler]
#5  0x00007f1c47fd1484 in QGraphicsItem::isWidget() const () from /usr/lib/libQtGui.so.4
#6  0x00007f1c47fd3b89 in QGraphicsItem::isWindow() const () from /usr/lib/libQtGui.so.4
#7  0x00007f1c48007269 in QGraphicsScene::event(QEvent*) () from /usr/lib/libQtGui.so.4
#8  0x00007f1c47a50efc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#9  0x00007f1c47a581ce in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#10 0x00007f1c48687ab6 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#11 0x00007f1c49aa0c2c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#12 0x00007f1c480189f6 in QGraphicsView::viewportEvent(QEvent*) () from /usr/lib/libQtGui.so.4
#13 0x00007f1c49a9ff47 in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#14 0x00007f1c47a50ecc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#15 0x00007f1c47a581ce in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#16 0x00007f1c48687ab6 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#17 0x00007f1c49aa0c2c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#18 0x00007f1c47a9fb6b in QWidget::event(QEvent*) () from /usr/lib/libQtGui.so.4
#19 0x00007f1c47dfb2a6 in QFrame::event(QEvent*) () from /usr/lib/libQtGui.so.4
#20 0x00007f1c47e8abc9 in QAbstractScrollArea::event(QEvent*) () from /usr/lib/libQtGui.so.4
#21 0x00007f1c47a50efc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#22 0x00007f1c47a581ce in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#23 0x00007f1c48687ab6 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#24 0x00007f1c49aa0c2c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#25 0x00007f1c47a5b55b in QApplication::setActiveWindow(QWidget*) () from /usr/lib/libQtGui.so.4
#26 0x00007f1c47abcb9e in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/libQtGui.so.4
#27 0x00007f1c47ae5d0c in ?? () from /usr/lib/libQtGui.so.4
#28 0x00007f1c46981bce in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#29 0x00007f1c46985598 in ?? () from /lib/libglib-2.0.so.0
#30 0x00007f1c469856c0 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#31 0x00007f1c49ac91a6 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#32 0x00007f1c47ae54be in ?? () from /usr/lib/libQtGui.so.4
#33 0x00007f1c49a9f532 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#34 0x00007f1c49a9f904 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#35 0x00007f1c49aa1ab9 in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#36 0x00007f1c3de204cf in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#37 0x0000000000406da8 in _start ()

Reported using DrKonqi