Application that crashed: kontact
Version of the application: 4.3.0
KDE Version: 4.3.00 (KDE 4.3.0)
Qt Version: 4.5.2
Operating System: Linux 2.6.30-custom i686
Distribution: Debian GNU/Linux testing (squeeze)

What I was doing when the application crashed:
I marked my ToDo item as 100% Complete. Add to Journal was also enabled.
Clicking on Ok crashed kontact

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#6  0xacb11cc0 in KOTodoModel::moveIfParentChanged (this=0xc15c1a0, curNode=0x0, todo=0xb5b5000, addParentIfMissing=false) at /usr/include/qt4/QtCore/qabstractitemmodel.h:366
#7  0xacb14162 in KOTodoModel::processChange (this=0xc15c1a0, incidence=0xb5b5000, action=1) at ../../korganizer/views/todoview/kotodomodel.cpp:271
#8  0xacb1acfe in KOTodoView::changeIncidenceDisplay (this=0xcfee660, incidence=0xb5b5000, action=1) at ../../korganizer/views/todoview/kotodoview.cpp:406
#9  0xacb399ab in CalendarView::changeIncidenceDisplay (this=0xec19ca8, incidence=0xb5b5000, action=1) at ../../korganizer/calendarview.cpp:782
#10 0xacb44592 in CalendarView::incidenceChanged (this=0xec19ca8, oldIncidence=0xc986910, newIncidence=0xb5b5000, what=9) at ../../korganizer/calendarview.cpp:726
#11 0xacb448c3 in CalendarView::incidenceChanged (this=0xec19ca8, oldIncidence=0xc986910, newIncidence=0xb5b5000) at ../../korganizer/calendarview.cpp:667
#12 0xacb49b26 in CalendarView::qt_metacall (this=0xec19ca8, _c=QMetaObject::InvokeMetaMethod, _id=93, _a=0xbfd8fae8) at ./calendarview.moc:485
#13 0xb78cbb33 in QMetaObject::activate (sender=0xc24d7d8, from_signal_index=6, to_signal_index=6, argv=0xbfd8fae8) at kernel/qobject.cpp:3112
#14 0xb78cc782 in QMetaObject::activate (sender=0xc24d7d8, m=0xada6f19c, local_signal_index=2, argv=0xbfd8fae8) at kernel/qobject.cpp:3186
#15 0xada6e139 in KOrg::IncidenceChangerBase::incidenceChanged (this=0xc24d7d8, _t1=0xc986910, _t2=0xb5b5000) at ./incidencechangerbase.moc:108
#16 0xacbdcf19 in IncidenceChanger::changeIncidence (this=0xc24d7d8, oldinc=0xc986910, newinc=0xb5b5000, action=-1) at ../../korganizer/incidencechanger.cpp:276
#17 0xacb59cc8 in KOTodoEditor::processInput (this=0xd05ec50) at ../../korganizer/kotodoeditor.cpp:258
#18 0xacb547e9 in KOIncidenceEditor::slotButtonClicked (this=0xd05ec50, button=4) at ../../korganizer/koincidenceeditor.cpp:102
#19 0xb7d20332 in KDialog::qt_metacall (this=0xd05ec50, _c=QMetaObject::InvokeMetaMethod, _id=33, _a=0xbfd8fdcc) at ./kdialog.moc:184
#20 0xb7de58ea in KPageDialog::qt_metacall (this=0xd05ec50, _c=QMetaObject::InvokeMetaMethod, _id=69, _a=0xbfd8fdcc) at ./kpagedialog.moc:64
#21 0xacb550ba in KOIncidenceEditor::qt_metacall (this=0xd05ec50, _c=QMetaObject::InvokeMetaMethod, _id=69, _a=0xbfd8fdcc) at ./koincidenceeditor.moc:107
#22 0xacb5a27a in KOTodoEditor::qt_metacall (this=0xd05ec50, _c=QMetaObject::InvokeMetaMethod, _id=69, _a=0xbfd8fdcc) at ./kotodoeditor.moc:65
#23 0xb78cbb33 in QMetaObject::activate (sender=0xcf849f0, from_signal_index=4, to_signal_index=4, argv=0xbfd8fdcc) at kernel/qobject.cpp:3112
#24 0xb78cc782 in QMetaObject::activate (sender=0xcf849f0, m=0xb79a6d58, local_signal_index=0, argv=0xbfd8fdcc) at kernel/qobject.cpp:3186
#25 0xb78cf3a3 in QSignalMapper::mapped (this=0xcf849f0, _t1=4) at .moc/release-shared/moc_qsignalmapper.cpp:95
#26 0xb78cfc2d in QSignalMapper::map (this=0xcf849f0, sender=0xc237298) at kernel/qsignalmapper.cpp:266
#27 0xb78cfe1e in QSignalMapper::map (this=0xcf849f0) at kernel/qsignalmapper.cpp:257
#28 0xb78d06eb in QSignalMapper::qt_metacall (this=0xcf849f0, _c=QMetaObject::InvokeMetaMethod, _id=4, _a=0xbfd8ff4c) at .moc/release-shared/moc_qsignalmapper.cpp:81
#29 0xb78cbb33 in QMetaObject::activate (sender=0xc237298, from_signal_index=29, to_signal_index=30, argv=0xbfd8ff4c) at kernel/qobject.cpp:3112
#30 0xb78cbf60 in QMetaObject::activate (sender=0xc237298, m=0xb775f924, from_local_signal_index=2, to_local_signal_index=3, argv=0xbfd8ff4c) at kernel/qobject.cpp:3206
#31 0xb75789a1 in QAbstractButton::clicked (this=0xc237298, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:200
#32 0xb72a4379 in QAbstractButtonPrivate::emitClicked (this=0xd47bcc8) at widgets/qabstractbutton.cpp:543
#33 0xb72a5f64 in QAbstractButtonPrivate::click (this=0xd47bcc8) at widgets/qabstractbutton.cpp:536
#34 0xb72a61f6 in QAbstractButton::mouseReleaseEvent (this=0xc237298, e=0xbfd905ec) at widgets/qabstractbutton.cpp:1115
#35 0xb6f4c77b in QWidget::event (this=0xc237298, event=0xbfd905ec) at kernel/qwidget.cpp:7549
#36 0xb72a421e in QAbstractButton::event (this=0xc237298, e=0xbfd905ec) at widgets/qabstractbutton.cpp:1077
#37 0xb734da50 in QPushButton::event (this=0xc237298, e=0xbfd905ec) at widgets/qpushbutton.cpp:662
#38 0xb6ef6814 in QApplicationPrivate::notify_helper (this=0x857d4d8, receiver=0xc237298, e=0xbfd905ec) at kernel/qapplication.cpp:4056
#39 0xb6eff2e1 in QApplication::notify (this=0xbfd91e3c, receiver=0xc237298, e=0xbfd905ec) at kernel/qapplication.cpp:3758
#40 0xb7db500d in KApplication::notify (this=0xbfd91e3c, receiver=0xc237298, event=0xbfd905ec) at ../../kdeui/kernel/kapplication.cpp:302
#41 0xb78b69cb in QCoreApplication::notifyInternal (this=0xbfd91e3c, receiver=0xc237298, event=0xbfd905ec) at kernel/qcoreapplication.cpp:610
#42 0xb6efe36e in QApplicationPrivate::sendMouseEvent (receiver=0xc237298, event=0xbfd905ec, alienWidget=0xc237298, nativeWidget=0xd05ec50, buttonDown=0xb776caa0, lastMouseReceiver=@0xb776caa4)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#43 0xb6f6cea5 in QETWidget::translateMouseEvent (this=0xd05ec50, event=0xbfd91b98) at kernel/qapplication_x11.cpp:4409
#44 0xb6f6c386 in QApplication::x11ProcessEvent (this=0xbfd91e3c, event=0xbfd91b98) at kernel/qapplication_x11.cpp:3428
#45 0xb6f97438 in QEventDispatcherX11::processEvents (this=0x85596e8, flags={i = -1076290504}) at kernel/qeventdispatcher_x11.cpp:132
#46 0xb78b501a in QEventLoop::processEvents (this=0xbfd91cb0, flags={i = -1076290440}) at kernel/qeventloop.cpp:149
#47 0xb78b5462 in QEventLoop::exec (this=0xbfd91cb0, flags={i = -1076290376}) at kernel/qeventloop.cpp:201
#48 0xb78b78b9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#49 0xb6ef6697 in QApplication::exec () at kernel/qapplication.cpp:3525
#50 0x0804bd40 in main (argc=1, argv=0xbfd92034) at ../../../kontact/src/main.cpp:218

This bug may be a duplicate of or related to bug 203207

Reported using DrKonqi