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 2.6.31-16-generic i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
k

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[KCrash Handler]
#6  0x00000019 in ?? ()
#7  0x01b9f2d0 in Plasma::ToolTipManager::setContent(QGraphicsWidget*, Plasma::ToolTipContent const&) () from /usr/lib/libplasma.so.3
#8  0x01f91cf5 in ?? () from /usr/lib/kde4/plasma_applet_pager.so
#9  0x01f922c7 in ?? () from /usr/lib/kde4/plasma_applet_pager.so
#10 0x01f925eb in ?? () from /usr/lib/kde4/plasma_applet_pager.so
#11 0x014af864 in QGraphicsItem::sceneEvent(QEvent*) () from /usr/lib/libQtGui.so.4
#12 0x014fc9ef in QGraphicsWidget::sceneEvent(QEvent*) () from /usr/lib/libQtGui.so.4
#13 0x014d1e14 in ?? () from /usr/lib/libQtGui.so.4
#14 0x014d372e in ?? () from /usr/lib/libQtGui.so.4
#15 0x014de1bf in ?? () from /usr/lib/libQtGui.so.4
#16 0x014de508 in QGraphicsScene::mouseMoveEvent(QGraphicsSceneMouseEvent*) () from /usr/lib/libQtGui.so.4
#17 0x014dffc7 in QGraphicsScene::event(QEvent*) () from /usr/lib/libQtGui.so.4
#18 0x00ea3f54 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#19 0x00eab67c in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#20 0x00b70bfa in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#21 0x0024f6cb in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#22 0x014ece9f in QGraphicsViewPrivate::mouseMoveEventHandler(QMouseEvent*) () from /usr/lib/libQtGui.so.4
#23 0x014f1d83 in QGraphicsView::mouseMoveEvent(QMouseEvent*) () from /usr/lib/libQtGui.so.4
#24 0x00ef8e63 in QWidget::event(QEvent*) () from /usr/lib/libQtGui.so.4
#25 0x012a8633 in QFrame::event(QEvent*) () from /usr/lib/libQtGui.so.4
#26 0x01347494 in QAbstractScrollArea::viewportEvent(QEvent*) () from /usr/lib/libQtGui.so.4
#27 0x014f151f in QGraphicsView::viewportEvent(QEvent*) () from /usr/lib/libQtGui.so.4
#28 0x01349a95 in ?? () from /usr/lib/libQtGui.so.4
#29 0x0024e83a in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#30 0x00ea3f2c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#31 0x00eac033 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#32 0x00b70bfa in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#33 0x0024f6cb in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#34 0x00eaaf6e in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&) () from /usr/lib/libQtGui.so.4
#35 0x00f197c0 in ?? () from /usr/lib/libQtGui.so.4
#36 0x00f18c4b in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/libQtGui.so.4
#37 0x00f45502 in ?? () from /usr/lib/libQtGui.so.4
#38 0x03303e78 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#39 0x03307720 in ?? () from /lib/libglib-2.0.so.0
#40 0x03307853 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#41 0x0027a02c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#42 0x00f44be5 in ?? () from /usr/lib/libQtGui.so.4
#43 0x0024dc79 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#44 0x0024e0ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#45 0x0025053f in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#46 0x00ea3dd7 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#47 0x04d1180d in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#48 0x0804dde1 in _start ()

Reported using DrKonqi