Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.3
Operating System: Linux 2.6.31.12-desktop-1mnb i686
Distribution: "Mandriva Linux 2010.0"

What I was doing when the application crashed:
I closed weather widget and system crashed, some other problems with system as well

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb56236d0 (LWP 4380))]

Thread 2 (Thread 0xa857cb70 (LWP 4485)):
#0  0xffffe424 in __kernel_vsyscall ()
#1  0xb74a39e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i686/libpthread.so.0
#2  0xb74fefb0 in QWaitCondition::wait () from /usr/lib/libQtCore.so.4
#3  0xb5c4b194 in ?? () from /usr/lib/libQtNetwork.so.4
#4  0xb74fde83 in ?? () from /usr/lib/libQtCore.so.4
#5  0xb749f885 in start_thread () from /lib/i686/libpthread.so.0
#6  0xb5ef057e in clone () from /lib/i686/libc.so.6

Thread 1 (Thread 0xb56236d0 (LWP 4380)):
[KCrash Handler]
#6  0xb6797a97 in QGraphicsItem::isWidget () from /usr/lib/libQtGui.so.4
#7  0xb679a992 in QGraphicsItem::isWindow () from /usr/lib/libQtGui.so.4
#8  0xb67d22df in QGraphicsScene::event () from /usr/lib/libQtGui.so.4
#9  0xb617a68c in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#10 0xb61820ce in QApplication::notify () from /usr/lib/libQtGui.so.4
#11 0xb6bdb9e1 in KApplication::notify () from /usr/lib/libkdeui.so.5
#12 0xb75f4c0e in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#13 0xb67e3e98 in QGraphicsView::viewportEvent () from /usr/lib/libQtGui.so.4
#14 0xb66307c6 in ?? () from /usr/lib/libQtGui.so.4
#15 0xb75f3dee in QCoreApplicationPrivate::sendThroughObjectEventFilters () from /usr/lib/libQtCore.so.4
#16 0xb617a660 in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#17 0xb618201e in QApplication::notify () from /usr/lib/libQtGui.so.4
#18 0xb6bdb9e1 in KApplication::notify () from /usr/lib/libkdeui.so.5
#19 0xb75f4c0e in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#20 0xb61d1abf in QWidget::event () from /usr/lib/libQtGui.so.4
#21 0xb658dc95 in QFrame::event () from /usr/lib/libQtGui.so.4
#22 0xb662ec3a in QAbstractScrollArea::event () from /usr/lib/libQtGui.so.4
#23 0xb67e3c88 in QGraphicsView::event () from /usr/lib/libQtGui.so.4
#24 0xb617a68c in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#25 0xb618201e in QApplication::notify () from /usr/lib/libQtGui.so.4
#26 0xb6bdb9e1 in KApplication::notify () from /usr/lib/libkdeui.so.5
#27 0xb75f4c0e in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#28 0xb61857f4 in QApplication::setActiveWindow () from /usr/lib/libQtGui.so.4
#29 0xb61f143b in QApplication::x11ProcessEvent () from /usr/lib/libQtGui.so.4
#30 0xb621cd88 in ?? () from /usr/lib/libQtGui.so.4
#31 0xb5d69b92 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#32 0xb5d6d468 in ?? () from /usr/lib/libglib-2.0.so.0
#33 0xb5d6d58e in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#34 0xb76208f1 in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#35 0xb621c4ba in ?? () from /usr/lib/libQtGui.so.4
#36 0xb75f326d in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#37 0xb75f36b9 in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#38 0xb75f5b50 in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#39 0xb617a504 in QApplication::exec () from /usr/lib/libQtGui.so.4
#40 0xb3e1bbd9 in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#41 0x0804da54 in _start ()

Reported using DrKonqi