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 2.6.26.8.tex4 i686

What I was doing when the application crashed:
Was running Virtualbox with 1 VM running and 1 VM starting, was trying to switch from 1 to the other VM by clicking on the Taskbar button for the VMs to pop up the list and the crash came. This is the first time I had a crash with KDE4. I only upgraded from KDE 3.5 a couple days ago. I have been doing a lot of user setup on the new Desktop with no problem until now. It did recover and start back up by itself. Yes I will answer any and all questions if you want to ask.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[KCrash Handler]
#9  0xb5b99026 in Plasma::PaintUtils::transition () from /usr/lib/libplasma.so.3
#10 0xa9197c49 in KPluginFactory::createInstance<Tasks, QObject> () from /usr/lib/kde4/plasma_applet_tasks.so
#11 0xa919396f in KPluginFactory::createInstance<Tasks, QObject> () from /usr/lib/kde4/plasma_applet_tasks.so
#12 0xa919ab5c in KPluginFactory::createInstance<Tasks, QObject> () from /usr/lib/kde4/plasma_applet_tasks.so
#13 0xb6d9b61d in QGraphicsScene::selectionArea () from /usr/lib/libQtGui.so.4
#14 0xb6da705e in QGraphicsScene::itemUpdated () from /usr/lib/libQtGui.so.4
#15 0xb6da951a in QGraphicsScene::drawItems () from /usr/lib/libQtGui.so.4
#16 0xb6db75e1 in QGraphicsView::drawItems () from /usr/lib/libQtGui.so.4
#17 0xb6dc4dba in QGraphicsView::paintEvent () from /usr/lib/libQtGui.so.4
#18 0xb47cd54e in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#19 0xb679fe01 in QWidget::event () from /usr/lib/libQtGui.so.4
#20 0xb6b69cc5 in QFrame::event () from /usr/lib/libQtGui.so.4
#21 0xb6c0a404 in QAbstractScrollArea::viewportEvent () from /usr/lib/libQtGui.so.4
#22 0xb6dc263c in QGraphicsView::viewportEvent () from /usr/lib/libQtGui.so.4
#23 0xb6c0c9a6 in QAbstractScrollArea::QAbstractScrollArea$base () from /usr/lib/libQtGui.so.4
#24 0xb7dc45f4 in QCoreApplicationPrivate::sendThroughObjectEventFilters () from /usr/lib/libQtCore.so.4
#25 0xb67487c0 in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#26 0xb6750254 in QApplication::notify () from /usr/lib/libQtGui.so.4
#27 0xb7280dc1 in KApplication::notify () from /usr/lib/libkdeui.so.5
#28 0xb7dc541d in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#29 0xb67a81a1 in QWidgetPrivate::drawWidget () from /usr/lib/libQtGui.so.4
#30 0xb67a8a4c in QWidgetPrivate::paintSiblingsRecursive () from /usr/lib/libQtGui.so.4
#31 0xb67a7db0 in QWidgetPrivate::drawWidget () from /usr/lib/libQtGui.so.4
#32 0xb6943488 in QWidgetPrivate::repaint_sys () from /usr/lib/libQtGui.so.4
#33 0xb6798b7e in QWidgetPrivate::syncBackingStore () from /usr/lib/libQtGui.so.4
#34 0xb679fbfa in QWidget::event () from /usr/lib/libQtGui.so.4
#35 0xb6b69cc5 in QFrame::event () from /usr/lib/libQtGui.so.4
#36 0xb6c0aeba in QAbstractScrollArea::event () from /usr/lib/libQtGui.so.4
#37 0xb6dc2508 in QGraphicsView::event () from /usr/lib/libQtGui.so.4
#38 0xb47cf509 in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#39 0xb67487ec in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#40 0xb6750254 in QApplication::notify () from /usr/lib/libQtGui.so.4
#41 0xb7280dc1 in KApplication::notify () from /usr/lib/libkdeui.so.5
#42 0xb7dc541d in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#43 0xb7dc60eb in QCoreApplicationPrivate::sendPostedEvents () from /usr/lib/libQtCore.so.4
#44 0xb7dc62bc in QCoreApplication::sendPostedEvents () from /usr/lib/libQtCore.so.4
#45 0xb7df1b0b in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#46 0xb62d75b1 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#47 0xb62daa95 in g_main_context_check () from /usr/lib/libglib-2.0.so.0
#48 0xb62daeec in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#49 0xb7df1708 in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#50 0xb67ebb1a in QX11Info::copyX11Data () from /usr/lib/libQtGui.so.4
#51 0xb7dc3a5d in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#52 0xb7dc3eb1 in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#53 0xb7dc638a in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#54 0xb6748664 in QApplication::exec () from /usr/lib/libQtGui.so.4
#55 0xb47c4148 in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#56 0x0804dac5 in _start ()
#57 0x0804e75f in _start ()
#58 0x0804ebcc in _start ()
#59 0x0804f8ff in _start ()
#60 0xb63b5a36 in __libc_start_main () from /lib/i686/libc.so.6
#61 0x0804afc1 in _start ()

Reported using DrKonqi