Application: kontact (4.4.3)
KDE Platform Version: 4.4.3 (KDE 4.4.3)
Qt Version: 4.6.2
Operating System: Linux 2.6.33-ARCH x86_64
Distribution (Platform): Archlinux Packages

-- Information about the crash:
I've added my calendars from Google Calnder by this howto: http://www.linux.com/archive/feature/122054
And everytime when I try to reload the calendar - Kontact crashes.

The crash can be reproduced every time.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#5  0x00007f052d0ecb6e in KCal::IncidenceBase::uid() const () from /usr/lib/libkcal.so.4
#6  0x00007f052d111c46 in KCal::Calendar::removeRelations(KCal::Incidence*) () from /usr/lib/libkcal.so.4
#7  0x00007f052d11689f in KCal::CalendarLocal::deleteTodo(KCal::Todo*) () from /usr/lib/libkcal.so.4
#8  0x00007f052d131f0e in KCal::ICalFormatImpl::populate(KCal::Calendar*, icalcomponent_impl*) () from /usr/lib/libkcal.so.4
#9  0x00007f052d124222 in KCal::ICalFormat::fromRawString(KCal::Calendar*, QByteArray const&) () from /usr/lib/libkcal.so.4
#10 0x00007f052d1247f0 in KCal::ICalFormat::load(KCal::Calendar*, QString const&) () from /usr/lib/libkcal.so.4
#11 0x00007f052d15625f in KCal::FileStorage::load() () from /usr/lib/libkcal.so.4
#12 0x00007f052d1145b3 in KCal::CalendarLocal::load(QString const&, KCal::CalFormat*) () from /usr/lib/libkcal.so.4
#13 0x00007f052d161702 in KCal::ResourceCached::loadFromCache() () from /usr/lib/libkcal.so.4
#14 0x00007f0513a97850 in KCal::ResourceRemote::doLoad(bool) () from /usr/lib/libkcal_resourceremote.so.4
#15 0x00007f052d161856 in KCal::ResourceCached::load(KCal::ResourceCached::CacheAction) () from /usr/lib/libkcal.so.4
#16 0x00007f05135f7423 in ResourceView::reloadResource() () from /usr/lib/libkorganizerprivate.so.4
#17 0x00007f05135fa30e in ResourceView::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkorganizerprivate.so.4
#18 0x00007f0530f7562f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#19 0x00007f05303555e2 in QAction::triggered(bool) () from /usr/lib/libQtGui.so.4
#20 0x00007f05303557da in QAction::activate(QAction::ActionEvent) () from /usr/lib/libQtGui.so.4
#21 0x00007f053077beeb in ?? () from /usr/lib/libQtGui.so.4
#22 0x00007f0530781f1a in ?? () from /usr/lib/libQtGui.so.4
#23 0x00007f05303ab832 in QWidget::event(QEvent*) () from /usr/lib/libQtGui.so.4
#24 0x00007f053078313b in QMenu::event(QEvent*) () from /usr/lib/libQtGui.so.4
#25 0x00007f053035be84 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#26 0x00007f05303607ea in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#27 0x00007f05318f6e86 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#28 0x00007f0530f6179c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#29 0x00007f053035cdd5 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from /usr/lib/libQtGui.so.4
#30 0x00007f05303d7884 in ?? () from /usr/lib/libQtGui.so.4
#31 0x00007f05303d6029 in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/libQtGui.so.4
#32 0x00007f05303fb7f2 in ?? () from /usr/lib/libQtGui.so.4
#33 0x00007f0528a7fb33 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#34 0x00007f0528a80310 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#35 0x00007f0528a805ad in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#36 0x00007f0530f8a00f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#37 0x00007f05303fb4be in ?? () from /usr/lib/libQtGui.so.4
#38 0x00007f0530f60b82 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#39 0x00007f0530f60dbc in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#40 0x00007f0530f650eb in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#41 0x0000000000403e7e in _start ()

Reported using DrKonqi