Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.3 (KDE 4.3.3) "release 1"
Qt Version: 4.5.3
Operating System: Linux 2.6.27.37-0.1-default x86_64
Distribution: "openSUSE 11.1 (x86_64)"

What I was doing when the application crashed:
Changing the widgets in panel after upgrade from KDE 4.2.4 to KDE 4.3.3 generate the plasma crash.
I try almost all widgets to check the widgets functionality.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f95d0ac2750 (LWP 6593))]

Thread 2 (Thread 0x7f95afe57950 (LWP 6594)):
#0  0x00007f95d028ed59 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f95d04ffe69 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQtCore.so.4
#2  0x00007f95cf12ec5c in ?? () from /usr/lib64/libQtNetwork.so.4
#3  0x00007f95d04feeb5 in ?? () from /usr/lib64/libQtCore.so.4
#4  0x00007f95d028b070 in start_thread () from /lib64/libpthread.so.0
#5  0x00007f95ccde211d in clone () from /lib64/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f95d0ac2750 (LWP 6593)):
[KCrash Handler]
#5  0x00007f95cdf00f04 in QGraphicsItem::isWidget() const () from /usr/lib64/libQtGui.so.4
#6  0x00007f95cdf03709 in QGraphicsItem::isWindow() const () from /usr/lib64/libQtGui.so.4
#7  0x00007f95cdf3a301 in QGraphicsScene::event(QEvent*) () from /usr/lib64/libQtGui.so.4
#8  0x00007f95cd980a4d in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#9  0x00007f95cd988cda in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#10 0x00007f95cea6b09b in KApplication::notify(QObject*, QEvent*) () from /usr/lib64/libkdeui.so.5
#11 0x00007f95d05e815c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQtCore.so.4
#12 0x00007f95cdf4a946 in QGraphicsView::viewportEvent(QEvent*) () from /usr/lib64/libQtGui.so.4
#13 0x00007f95d05e7458 in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () from /usr/lib64/libQtCore.so.4
#14 0x00007f95cd980a1c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#15 0x00007f95cd988cda in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#16 0x00007f95cea6b09b in KApplication::notify(QObject*, QEvent*) () from /usr/lib64/libkdeui.so.5
#17 0x00007f95d05e815c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQtCore.so.4
#18 0x00007f95cd9d1baa in QWidget::event(QEvent*) () from /usr/lib64/libQtGui.so.4
#19 0x00007f95cdd2689b in QFrame::event(QEvent*) () from /usr/lib64/libQtGui.so.4
#20 0x00007f95cddb7509 in QAbstractScrollArea::event(QEvent*) () from /usr/lib64/libQtGui.so.4
#21 0x00007f95cd980a4d in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#22 0x00007f95cd988cda in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#23 0x00007f95cea6b09b in KApplication::notify(QObject*, QEvent*) () from /usr/lib64/libkdeui.so.5
#24 0x00007f95d05e815c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQtCore.so.4
#25 0x00007f95cd9877c5 in QApplication::setActiveWindow(QWidget*) () from /usr/lib64/libQtGui.so.4
#26 0x00007f95cd9f1210 in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib64/libQtGui.so.4
#27 0x00007f95cda18854 in ?? () from /usr/lib64/libQtGui.so.4
#28 0x00007f95cc4600fb in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#29 0x00007f95cc4638cd in ?? () from /usr/lib64/libglib-2.0.so.0
#30 0x00007f95cc463a8b in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#31 0x00007f95d061156c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#32 0x00007f95cda17fdf in ?? () from /usr/lib64/libQtGui.so.4
#33 0x00007f95d05e69e2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#34 0x00007f95d05e6db4 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#35 0x00007f95d05e90a4 in QCoreApplication::exec() () from /usr/lib64/libQtCore.so.4
#36 0x00007f95c3e18c4b in kdemain () from /usr/lib64/libkdeinit4_plasma-desktop.so
#37 0x0000000000407495 in _start ()

Reported using DrKonqi