Application that crashed: kontact
Version of the application: 4.3.4
KDE Version: 4.3.4 (KDE 4.3.4)
Qt Version: 4.5.3
Operating System: Linux 2.6.32-ARCH x86_64

What I was doing when the application crashed:
1) Start Kontact
2) Go on Contact
3) Edit a contact
4) Click on Calendar
5) You've got a nice crash

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#5  0x00007fb5c3488802 in KOAgendaItem::paintEvent(QPaintEvent*) () from /usr/lib/libkorganizerprivate.so.4
#6  0x00007fb5e2348930 in QWidget::event(QEvent*) () from /usr/lib/libQtGui.so.4
#7  0x00007fb5c3485bd0 in KOAgendaItem::event(QEvent*) () from /usr/lib/libkorganizerprivate.so.4
#8  0x00007fb5e22fa0dc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#9  0x00007fb5e23013be in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#10 0x00007fb5e37d1146 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#11 0x00007fb5e2e49a7c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#12 0x00007fb5e234fd23 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/libQtGui.so.4
#13 0x00007fb5e2350480 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) ()
   from /usr/lib/libQtGui.so.4
#14 0x00007fb5e234f993 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/libQtGui.so.4
#15 0x00007fb5e2350480 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) ()
   from /usr/lib/libQtGui.so.4
#16 0x00007fb5e234f993 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/libQtGui.so.4
#17 0x00007fb5e24c000e in ?? () from /usr/lib/libQtGui.so.4
#18 0x00007fb5e2342130 in QWidgetPrivate::syncBackingStore() () from /usr/lib/libQtGui.so.4
#19 0x00007fb5e2348748 in QWidget::event(QEvent*) () from /usr/lib/libQtGui.so.4
#20 0x00007fb5e26bca1b in QMainWindow::event(QEvent*) () from /usr/lib/libQtGui.so.4
#21 0x00007fb5e38db743 in KXmlGuiWindow::event(QEvent*) () from /usr/lib/libkdeui.so.5
#22 0x00007fb5e22fa0dc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#23 0x00007fb5e23013be in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#24 0x00007fb5e37d1146 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#25 0x00007fb5e2e49a7c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#26 0x00007fb5e24bd587 in ?? () from /usr/lib/libQtGui.so.4
#27 0x00007fb5e24c0746 in ?? () from /usr/lib/libQtGui.so.4
#28 0x00007fb5e23440ab in QWidget::repaint(QRect const&) () from /usr/lib/libQtGui.so.4
#29 0x00007fb5e2344173 in QWidget::repaint() () from /usr/lib/libQtGui.so.4
#30 0x00007fb5e2706657 in QStatusBar::reformat() () from /usr/lib/libQtGui.so.4
#31 0x00007fb5e38bd6ee in KStatusBar::removeItem(int) () from /usr/lib/libkdeui.so.5
#32 0x00007fb5bfb01579 in KAddressbookPart::guiActivateEvent(KParts::GUIActivateEvent*) () from /usr/lib/kde4/kaddressbookpart.so
#33 0x00007fb5e2e58f25 in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#34 0x00007fb5e22fa0dc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#35 0x00007fb5e23013be in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#36 0x00007fb5e37d1146 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#37 0x00007fb5e2e49a7c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#38 0x00007fb5e18e5f4a in KParts::MainWindow::createGUI(KParts::Part*) () from /usr/lib/libkparts.so.4
#39 0x00007fb5e414184d in Kontact::MainWindow::selectPlugin(Kontact::Plugin*) () from /usr/lib/libkontactprivate.so.4
#40 0x00007fb5e4146002 in Kontact::MainWindow::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkontactprivate.so.4
#41 0x00007fb5e2e5ebac in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#42 0x00007fb5e414719f in Kontact::SidePaneBase::pluginSelected(Kontact::Plugin*) () from /usr/lib/libkontactprivate.so.4
#43 0x00007fb5e41471f0 in Kontact::SidePaneBase::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkontactprivate.so.4
#44 0x00007fb5e41473e8 in Kontact::IconSidePane::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkontactprivate.so.4
#45 0x00007fb5e2e5ebac in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#46 0x00007fb5e414748f in Kontact::Navigator::pluginActivated(Kontact::Plugin*) () from /usr/lib/libkontactprivate.so.4
#47 0x00007fb5e4147520 in Kontact::Navigator::slotCurrentChanged(QModelIndex const&) () from /usr/lib/libkontactprivate.so.4
#48 0x00007fb5e4147c51 in Kontact::Navigator::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkontactprivate.so.4
#49 0x00007fb5e2e5ebac in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#50 0x00007fb5e281a78a in QItemSelectionModel::currentChanged(QModelIndex const&, QModelIndex const&) () from /usr/lib/libQtGui.so.4
#51 0x00007fb5e281a8d2 in QItemSelectionModel::setCurrentIndex(QModelIndex const&, QFlags<QItemSelectionModel::SelectionFlag>) () from /usr/lib/libQtGui.so.4
#52 0x00007fb5e27cfa44 in QAbstractItemView::mousePressEvent(QMouseEvent*) () from /usr/lib/libQtGui.so.4
#53 0x00007fb5e2348b36 in QWidget::event(QEvent*) () from /usr/lib/libQtGui.so.4
#54 0x00007fb5e26a23e6 in QFrame::event(QEvent*) () from /usr/lib/libQtGui.so.4
#55 0x00007fb5e27d46ab in QAbstractItemView::viewportEvent(QEvent*) () from /usr/lib/libQtGui.so.4
#56 0x00007fb5e2e48dc7 in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#57 0x00007fb5e22fa0ac in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#58 0x00007fb5e2301205 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#59 0x00007fb5e37d1146 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#60 0x00007fb5e2e49a7c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#61 0x00007fb5e2300ac2 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&) () from /usr/lib/libQtGui.so.4
#62 0x00007fb5e2366ab4 in ?? () from /usr/lib/libQtGui.so.4
#63 0x00007fb5e236578a in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/libQtGui.so.4
#64 0x00007fb5e238db1c in ?? () from /usr/lib/libQtGui.so.4
#65 0x00007fb5dba3226e in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#66 0x00007fb5dba35c28 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#67 0x00007fb5dba35d50 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#68 0x00007fb5e2e71f73 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#69 0x00007fb5e238d2fe in ?? () from /usr/lib/libQtGui.so.4
#70 0x00007fb5e2e483b2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#71 0x00007fb5e2e48784 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#72 0x00007fb5e2e4a939 in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#73 0x0000000000403ef7 in _start ()

This bug may be a duplicate of or related to bug 179444

Reported using DrKonqi