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 2.6.28-14-generic i686
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
Kontact crashes after making changes in an existing todo. I pressed the "Advanced..." button of 1 advanced reminder configured, checked the repeat button and changed the interval. When saving this change Kontact crashed.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#6  0xa95e9c70 in KOTodoModel::moveIfParentChanged (this=0x99af298, curNode=0x0, todo=0x9acf130, addParentIfMissing=false) at /usr/include/qt4/QtCore/qabstractitemmodel.h:366
#7  0xa95ec122 in KOTodoModel::processChange (this=0x99af298, incidence=0x9acf130, action=1) at /build/buildd/kdepim-4.3.0/korganizer/views/todoview/kotodomodel.cpp:271
#8  0xa95f2bfe in KOTodoView::changeIncidenceDisplay (this=0x99b9ff8, incidence=0x9acf130, action=1) at /build/buildd/kdepim-4.3.0/korganizer/views/todoview/kotodoview.cpp:406
#9  0xa9611a4b in CalendarView::changeIncidenceDisplay (this=0x9a289c0, incidence=0x9acf130, action=1) at /build/buildd/kdepim-4.3.0/korganizer/calendarview.cpp:782
#10 0xa961c72a in CalendarView::incidenceChanged (this=0x9a289c0, oldIncidence=0x9d29c88, newIncidence=0x9acf130, what=9) at /build/buildd/kdepim-4.3.0/korganizer/calendarview.cpp:726
#11 0xa961ca63 in CalendarView::incidenceChanged (this=0x9a289c0, oldIncidence=0x9d29c88, newIncidence=0x9acf130) at /build/buildd/kdepim-4.3.0/korganizer/calendarview.cpp:667
#12 0xa9621d66 in CalendarView::qt_metacall (this=0x9a289c0, _c=QMetaObject::InvokeMetaMethod, _id=93, _a=0xbf812ba8) at /build/buildd/kdepim-4.3.0/obj-i486-linux-gnu/korganizer/calendarview.moc:485
#13 0xb5c911b8 in QMetaObject::activate (sender=0x99adac0, from_signal_index=6, to_signal_index=6, argv=0xbf812ba8) at kernel/qobject.cpp:3113
#14 0xb5c91e42 in QMetaObject::activate (sender=0x99adac0, m=0xab3a3dbc, local_signal_index=2, argv=0xbf812ba8) at kernel/qobject.cpp:3187
#15 0xab3a0f59 in KOrg::IncidenceChangerBase::incidenceChanged (this=0x99adac0, _t1=0x9d29c88, _t2=0x9acf130)
    at /build/buildd/kdepim-4.3.0/obj-i486-linux-gnu/korganizer/interfaces/korganizer/incidencechangerbase.moc:108
#16 0xa96b5b29 in IncidenceChanger::changeIncidence (this=0x99adac0, oldinc=0x9d29c88, newinc=0x9acf130, action=-1) at /build/buildd/kdepim-4.3.0/korganizer/incidencechanger.cpp:276
#17 0xa96320c8 in KOTodoEditor::processInput (this=0x9c6b5b8) at /build/buildd/kdepim-4.3.0/korganizer/kotodoeditor.cpp:258
#18 0xa962cb29 in KOIncidenceEditor::slotButtonClicked (this=0x9c6b5b8, button=4) at /build/buildd/kdepim-4.3.0/korganizer/koincidenceeditor.cpp:102
#19 0xb6ca0e2c in KDialog::qt_metacall (this=0x9c6b5b8, _c=QMetaObject::InvokeMetaMethod, _id=33, _a=0xbf812e8c) at /build/buildd/kde4libs-4.3.0/obj-i486-linux-gnu/kdeui/kdialog.moc:184
#20 0xb6d6772a in KPageDialog::qt_metacall (this=0x9c6b5b8, _c=QMetaObject::InvokeMetaMethod, _id=69, _a=0xbf812e8c) at /build/buildd/kde4libs-4.3.0/obj-i486-linux-gnu/kdeui/kpagedialog.moc:64
#21 0xa962d40a in KOIncidenceEditor::qt_metacall (this=0x9c6b5b8, _c=QMetaObject::InvokeMetaMethod, _id=69, _a=0xbf812e8c)
    at /build/buildd/kdepim-4.3.0/obj-i486-linux-gnu/korganizer/koincidenceeditor.moc:107
#22 0xa963267a in KOTodoEditor::qt_metacall (this=0x9c6b5b8, _c=QMetaObject::InvokeMetaMethod, _id=69, _a=0xbf812e8c) at /build/buildd/kdepim-4.3.0/obj-i486-linux-gnu/korganizer/kotodoeditor.moc:65
#23 0xb5c911b8 in QMetaObject::activate (sender=0x9bed770, from_signal_index=4, to_signal_index=4, argv=0xbf812e8c) at kernel/qobject.cpp:3113
#24 0xb5c91e42 in QMetaObject::activate (sender=0x9bed770, m=0xb5d6d878, local_signal_index=0, argv=0xbf812e8c) at kernel/qobject.cpp:3187
#25 0xb5c94ab3 in QSignalMapper::mapped (this=0x9bed770, _t1=4) at .moc/release-shared/moc_qsignalmapper.cpp:95
#26 0xb5c9533d in QSignalMapper::map (this=0x9bed770, sender=0x9571018) at kernel/qsignalmapper.cpp:266
#27 0xb5c9552e in QSignalMapper::map (this=0x9bed770) at kernel/qsignalmapper.cpp:257
#28 0xb5c95dfb in QSignalMapper::qt_metacall (this=0x9bed770, _c=QMetaObject::InvokeMetaMethod, _id=4, _a=0xbf81300c) at .moc/release-shared/moc_qsignalmapper.cpp:81
#29 0xb5c911b8 in QMetaObject::activate (sender=0x9571018, from_signal_index=29, to_signal_index=30, argv=0xbf81300c) at kernel/qobject.cpp:3113
#30 0xb5c915f0 in QMetaObject::activate (sender=0x9571018, m=0xb69b70a4, from_local_signal_index=2, to_local_signal_index=3, argv=0xbf81300c) at kernel/qobject.cpp:3207
#31 0xb67cdf91 in QAbstractButton::clicked (this=0x9571018, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:200
#32 0xb64f53e9 in QAbstractButtonPrivate::emitClicked (this=0x9c71bf0) at widgets/qabstractbutton.cpp:543
#33 0xb64f7044 in QAbstractButtonPrivate::click (this=0x9c71bf0) at widgets/qabstractbutton.cpp:536
#34 0xb64f72d6 in QAbstractButton::mouseReleaseEvent (this=0x9571018, e=0xbf8135e8) at widgets/qabstractbutton.cpp:1115
#35 0xb6193973 in QWidget::event (this=0x9571018, event=0xbf8135e8) at kernel/qwidget.cpp:7549
#36 0xb64f528e in QAbstractButton::event (this=0x9571018, e=0xbf8135e8) at widgets/qabstractbutton.cpp:1077
#37 0xb65a0050 in QPushButton::event (this=0x9571018, e=0xbf8135e8) at widgets/qpushbutton.cpp:662
#38 0xb613cd3c in QApplicationPrivate::notify_helper (this=0x84880b8, receiver=0x9571018, e=0xbf8135e8) at kernel/qapplication.cpp:4056
#39 0xb61459b1 in QApplication::notify (this=0xbf814f68, receiver=0x9571018, e=0xbf8135e8) at kernel/qapplication.cpp:3758
#40 0xb6d365cd in KApplication::notify (this=0xbf814f68, receiver=0x9571018, event=0xbf8135e8) at /build/buildd/kde4libs-4.3.0/kdeui/kernel/kapplication.cpp:302
#41 0xb5c7bbcb in QCoreApplication::notifyInternal (this=0xbf814f68, receiver=0x9571018, event=0xbf8135e8) at kernel/qcoreapplication.cpp:610
#42 0xb6144a1e in QApplicationPrivate::sendMouseEvent (receiver=0x9571018, event=0xbf8135e8, alienWidget=0x9571018, nativeWidget=0x9c6b5b8, buttonDown=0xb69beaa0, lastMouseReceiver=@0xb69beaa4)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#43 0xb61b4cce in QETWidget::translateMouseEvent (this=0x9c6b5b8, event=0xbf814c7c) at kernel/qapplication_x11.cpp:4409
#44 0xb61b4085 in QApplication::x11ProcessEvent (this=0xbf814f68, event=0xbf814c7c) at kernel/qapplication_x11.cpp:3428
#45 0xb61df37a in x11EventSourceDispatch (s=0x848a720, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#46 0xb4d4db88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#47 0xb4d510eb in ?? () from /usr/lib/libglib-2.0.so.0
#48 0xb4d51268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#49 0xb5ca72f8 in QEventDispatcherGlib::processEvents (this=0x8458028, flags={i = -1082044872}) at kernel/qeventdispatcher_glib.cpp:327
#50 0xb61dea75 in QGuiEventDispatcherGlib::processEvents (this=0x8458028, flags={i = -1082044824}) at kernel/qguieventdispatcher_glib.cpp:202
#51 0xb5c7a1fa in QEventLoop::processEvents (this=0xbf814ee0, flags={i = -1082044760}) at kernel/qeventloop.cpp:149
#52 0xb5c7a642 in QEventLoop::exec (this=0xbf814ee0, flags={i = -1082044696}) at kernel/qeventloop.cpp:201
#53 0xb5c7cae9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#54 0xb613cbb7 in QApplication::exec () at kernel/qapplication.cpp:3525
#55 0x0804bfef in main (argc=1, argv=0xbf815264) at /build/buildd/kdepim-4.3.0/kontact/src/main.cpp:218

This bug may be a duplicate of or related to bug 200970

Reported using DrKonqi