Application that crashed: korganizer
Version of the application: 4.3.0
KDE Version: 4.3.00 (KDE 4.3.0)
Qt Version: 4.5.2
Operating System: Linux 2.6.29.6-217.2.16.fc11.x86_64 x86_64
Distribution: "Fedora release 11 (Leonidas)"

What I was doing when the application crashed:
I have the segfault when check some Summary as "completed" and then select "file" - "Purge Completed-To dos"

 -- Backtrace:
Application: KOrganizer (korganizer), signal: Segmentation fault
[KCrash Handler]
#5  0x00007f8244a021b8 in QWidget::setUpdatesEnabled(bool) () from /usr/lib64/libkorganizerprivate.so.4
#6  0x00007f8244a24b94 in CalendarView::changeIncidenceDisplay(KCal::Incidence*, int) () from /usr/lib64/libkorganizerprivate.so.4
#7  0x00007f8244a24c4e in CalendarView::incidenceDeleted(KCal::Incidence*) () from /usr/lib64/libkorganizerprivate.so.4
#8  0x00007f8244a346ea in CalendarView::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib64/libkorganizerprivate.so.4
#9  0x00000037c6d54fdc in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQtCore.so.4
#10 0x000000342a4049a2 in KOrg::IncidenceChangerBase::incidenceDeleted(KCal::Incidence*) () from /usr/lib64/libkorganizer_interfaces.so.4
#11 0x00007f8244ab6de5 in IncidenceChanger::deleteIncidence(KCal::Incidence*) () from /usr/lib64/libkorganizerprivate.so.4
#12 0x00007f8244a25d68 in CalendarView::purgeCompletedSubTodos(KCal::Todo*, bool&) () from /usr/lib64/libkorganizerprivate.so.4
#13 0x00007f8244a2f0e3 in CalendarView::purgeCompleted() () from /usr/lib64/libkorganizerprivate.so.4
#14 0x00007f8244a34bf3 in CalendarView::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib64/libkorganizerprivate.so.4
#15 0x00000037c6d54fdc in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQtCore.so.4
#16 0x00000037c8589857 in QAction::triggered(bool) () from /usr/lib64/libQtGui.so.4
#17 0x00000037c858ac9f in QAction::activate(QAction::ActionEvent) () from /usr/lib64/libQtGui.so.4
#18 0x00000037c8975e7d in ?? () from /usr/lib64/libQtGui.so.4
#19 0x00000037c897bdba in ?? () from /usr/lib64/libQtGui.so.4
#20 0x0000003422ee2c7e in KMenu::mouseReleaseEvent(QMouseEvent*) () from /usr/lib64/libkdeui.so.5
#21 0x00000037c85de100 in QWidget::event(QEvent*) () from /usr/lib64/libQtGui.so.4
#22 0x00000037c897e57b in QMenu::event(QEvent*) () from /usr/lib64/libQtGui.so.4
#23 0x00000037c858f69c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#24 0x00000037c8596dc1 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#25 0x0000003422e11296 in KApplication::notify(QObject*, QEvent*) () from /usr/lib64/libkdeui.so.5
#26 0x00000037c6d3fcbc in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQtCore.so.4
#27 0x00000037c8596080 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&) () from /usr/lib64/libQtGui.so.4
#28 0x00000037c85fc2ee in ?? () from /usr/lib64/libQtGui.so.4
#29 0x00000037c85faf6a in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib64/libQtGui.so.4
#30 0x00000037c8622c7c in ?? () from /usr/lib64/libQtGui.so.4
#31 0x00000039f5237abe in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#32 0x00000039f523b278 in ?? () from /lib64/libglib-2.0.so.0
#33 0x00000039f523b3a0 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#34 0x00000037c6d683b6 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#35 0x00000037c862242e in ?? () from /usr/lib64/libQtGui.so.4
#36 0x00000037c6d3e5f2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#37 0x00000037c6d3e9c4 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#38 0x00000037c6d40b79 in QCoreApplication::exec() () from /usr/lib64/libQtCore.so.4
#39 0x0000000000407e96 in _start ()

This bug may be a duplicate of or related to bug 203456

Reported using DrKonqi