Korganizer, crash lors d'un nouvel élément

Application: KOrganizer (korganizer), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/i686/cmov/libthread_db.so.1".
[KCrash Handler]
6  0xb7155bc1 in KCal::Incidence::removeRelation(KCal::Incidence*) () from /usr/lib/libkcal.so.4
7  0xb7155f2a in KCal::Incidence::~Incidence() () from /usr/lib/libkcal.so.4
8  0xb715cf5d in KCal::Event::~Event() () from /usr/lib/libkcal.so.4
9  0xb715cfa2 in KCal::Event::~Event() () from /usr/lib/libkcal.so.4
10 0xb715fae9 in KCal::FreeBusy::Private::init(KCal::ListBase<KCal::Event> const&, KDateTime const&, KDateTime const&) () from /usr/lib/libkcal.so.4
11 0xb7160062 in KCal::FreeBusy::FreeBusy(KCal::Calendar*, KDateTime const&, KDateTime const&) () from /usr/lib/libkcal.so.4
12 0xb6ef7812 in ?? () from /usr/lib/libkorganizerprivate.so.4
13 0xb6efa8a4 in ?? () from /usr/lib/libkorganizerprivate.so.4
14 0xb6ec4db9 in ?? () from /usr/lib/libkorganizerprivate.so.4
15 0xb6909b04 in QObject::event(QEvent*) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
16 0xb5e364da in QWidget::event(QEvent*) () from /usr/lib/i386-linux-gnu/libQtGui.so.4
17 0xb5ddd47c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/libQtGui.so.4
18 0xb5de1f24 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/libQtGui.so.4
19 0xb74856b1 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
20 0xb68f354e in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
21 0xb6928010 in ?? () from /usr/lib/i386-linux-gnu/libQtCore.so.4
22 0xb69251b8 in ?? () from /usr/lib/i386-linux-gnu/libQtCore.so.4
23 0xb69251f2 in ?? () from /usr/lib/i386-linux-gnu/libQtCore.so.4
24 0xb40cc6d3 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
25 0xb40cca70 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
26 0xb40ccb51 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
27 0xb6925831 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
28 0xb5e901fa in ?? () from /usr/lib/i386-linux-gnu/libQtGui.so.4
29 0xb68f201c in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
30 0xb68f2311 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
31 0xb68f7a8a in QCoreApplication::exec() () from /usr/lib/i386-linux-gnu/libQtCore.so.4
32 0xb5ddb2f4 in QApplication::exec() () from /usr/lib/i386-linux-gnu/libQtGui.so.4
33 0x0804e9a6 in ?? ()
34 0xb5a56e46 in __libc_start_main () from /lib/i386-linux-gnu/i686/cmov/libc.so.6
35 0x0804ea11 in _start ()