Application that crashed: kontact
Version of the application: 4.3.1
KDE Version: 4.3.1 (KDE 4.3.1)
Qt Version: 4.5.1
Operating System: Linux 2.6.30-gentoo-r4 x86_64

What I was doing when the application crashed:
entered new appointment (whole day), remote file (sftp) calendar - crash

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#5  KCal::IncidenceBase::uid (this=0x255f560) at /usr/include/qt4/QtCore/qatomic_x86_64.h:121
#6  0x00007fab066cf56c in KOEventViewer::changeIncidenceDisplay (this=0x268aff0, incidence=0x278f8b0, action=0)
    at /var/tmp/portage/kde-base/korganizer-4.3.1/work/korganizer-4.3.1/korganizer/koeventviewer.cpp:136
#7  0x00007fab070ce797 in CalendarView::incidenceAdded (this=0x279ac00, incidence=0x278f8b0) at /var/tmp/portage/kde-base/korganizer-4.3.1/work/korganizer-4.3.1/korganizer/calendarview.cpp:659
#8  0x00007fab070d38e0 in CalendarView::qt_metacall (this=0x279ac00, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffa8b999b0)
    at /var/tmp/portage/kde-base/korganizer-4.3.1/work/korganizer-4.3.1_build/korganizer/calendarview.moc:484
#9  0x00007fab23686e6d in QMetaObject::activate (sender=0x269bf60, from_signal_index=<value optimized out>, to_signal_index=4, argv=0x0) at kernel/qobject.cpp:3108
#10 0x00007fab06b4b33f in KOrg::IncidenceChangerBase::incidenceAdded (this=0x7fffa8b996a0, _t1=0x278f8b0)
    at /var/tmp/portage/kde-base/korganizer-4.3.1/work/korganizer-4.3.1_build/korganizer/interfaces/korganizer/incidencechangerbase.moc:94
#11 0x00007fab07155ead in IncidenceChanger::addIncidence (this=0x269bf60, incidence=0x278f8b0, parent=0x3524240)
    at /var/tmp/portage/kde-base/korganizer-4.3.1/work/korganizer-4.3.1/korganizer/incidencechanger.cpp:334
#12 0x00007fab070e0427 in KOEventEditor::processInput (this=0x3524240) at /var/tmp/portage/kde-base/korganizer-4.3.1/work/korganizer-4.3.1/korganizer/koeventeditor.cpp:346
#13 0x00007fab070dd27f in KOIncidenceEditor::slotButtonClicked (this=0x3524240, button=<value optimized out>)
    at /var/tmp/portage/kde-base/korganizer-4.3.1/work/korganizer-4.3.1/korganizer/koincidenceeditor.cpp:102
#14 0x00007fab2517695d in KDialog::qt_metacall (this=0x3524240, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffa8b99f50)
    at /var/tmp/portage/kde-base/kdelibs-4.3.1-r1/work/kdelibs-4.3.1_build/kdeui/kdialog.moc:184
#15 0x00007fab2522c196 in KPageDialog::qt_metacall (this=0x7fffa8b996a0, _c=39187808, _id=0, _a=0x0) at /var/tmp/portage/kde-base/kdelibs-4.3.1-r1/work/kdelibs-4.3.1_build/kdeui/kpagedialog.moc:64
#16 0x00007fab070dda35 in KOIncidenceEditor::qt_metacall (this=0x7fffa8b996a0, _c=39187808, _id=0, _a=0x0)
    at /var/tmp/portage/kde-base/korganizer-4.3.1/work/korganizer-4.3.1_build/korganizer/koincidenceeditor.moc:107
#17 0x00007fab070e0906 in KOEventEditor::qt_metacall (this=0x7fffa8b996a0, _c=39187808, _id=0, _a=0x0)
    at /var/tmp/portage/kde-base/korganizer-4.3.1/work/korganizer-4.3.1_build/korganizer/koeventeditor.moc:71
#18 0x00007fab23686e6d in QMetaObject::activate (sender=0x34438c8, from_signal_index=<value optimized out>, to_signal_index=4, argv=0x0) at kernel/qobject.cpp:3108
#19 0x00007fab2368b05e in QSignalMapper::mapped (this=0x7fffa8b996a0, _t1=4) at .moc/release-shared/moc_qsignalmapper.cpp:95
#20 0x00007fab2368b100 in QSignalMapper::map (this=0x34438c8, sender=0x35e0300) at kernel/qsignalmapper.cpp:266
#21 0x00007fab2368c2f0 in QSignalMapper::qt_metacall (this=0x34438c8, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffa8b9a0e0) at .moc/release-shared/moc_qsignalmapper.cpp:81
#22 0x00007fab23686e6d in QMetaObject::activate (sender=0x35e0300, from_signal_index=<value optimized out>, to_signal_index=30, argv=0x0) at kernel/qobject.cpp:3108
#23 0x00007fab249ec8a7 in QAbstractButton::clicked (this=0x7fffa8b996a0, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:200
#24 0x00007fab2478679b in QAbstractButtonPrivate::emitClicked (this=0x30cf7d0) at widgets/qabstractbutton.cpp:543
#25 0x00007fab24786892 in QAbstractButton::click (this=0x35e0300) at widgets/qabstractbutton.cpp:980
#26 0x00007fab24887988 in QDialog::keyPressEvent (this=<value optimized out>, e=<value optimized out>) at dialogs/qdialog.cpp:628
#27 0x00007fab24481cc9 in QWidget::event (this=0x3524240, event=0x7fffa8b9a7d0) at kernel/qwidget.cpp:7556
#28 0x00007fab2443467d in QApplicationPrivate::notify_helper (this=0x11b11c0, receiver=0x3524240, e=0x7fffa8b9a7d0) at kernel/qapplication.cpp:4057
#29 0x00007fab2443e025 in QApplication::notify (this=<value optimized out>, receiver=0x3524240, e=0x7fffa8b9a7d0) at kernel/qapplication.cpp:3663
#30 0x00007fab252008ab in KApplication::notify (this=0x7fffa8b9cab0, receiver=0x35d54f0, event=0x7fffa8b9a7d0)
    at /var/tmp/portage/kde-base/kdelibs-4.3.1-r1/work/kdelibs-4.3.1/kdeui/kernel/kapplication.cpp:302
#31 0x00007fab23674a3b in QCoreApplication::notifyInternal (this=0x7fffa8b9cab0, receiver=0x35d54f0, event=0x7fffa8b9a7d0) at kernel/qcoreapplication.cpp:606
#32 0x00007fab244b76b4 in QKeyMapper::sendKeyEvent (keyWidget=0x35d54f0, grab=<value optimized out>, type=QEvent::KeyPress, code=16777220, modifiers={i = -1464226576}, text=@0x7fffa8b9ace0, 
    autorepeat=false, count=1, nativeScanCode=36, nativeVirtualKey=65293, nativeModifiers=0) at kernel/qkeymapper_x11.cpp:1675
#33 0x00007fab244b97b0 in QKeyMapperPrivate::translateKeyEvent (this=0x11e17a0, keyWidget=0x35d54f0, event=0x7fffa8b9c5e0, grab=96) at kernel/qkeymapper_x11.cpp:1645
#34 0x00007fab24496125 in QApplication::x11ProcessEvent (this=0x7fffa8b9cab0, event=0x7fffa8b9c5e0) at kernel/qapplication_x11.cpp:3459
#35 0x00007fab244baf9c in x11EventSourceDispatch (s=0x11a7b30, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#36 0x00007fab1ea46ce0 in IA__g_main_context_dispatch (context=0x11a78b0) at gmain.c:1824
#37 0x00007fab1ea4a408 in g_main_context_iterate (context=0x11a78b0, block=1, dispatch=1, self=<value optimized out>) at gmain.c:2455
#38 0x00007fab1ea4a5cc in IA__g_main_context_iteration (context=0x11a78b0, may_block=1) at gmain.c:2518
#39 0x00007fab23699e9f in QEventDispatcherGlib::processEvents (this=0x11a32a0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:324
#40 0x00007fab244ba85f in QGuiEventDispatcherGlib::processEvents (this=0x7fffa8b996a0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#41 0x00007fab236733f2 in QEventLoop::processEvents (this=<value optimized out>, flags={i = -1464219440}) at kernel/qeventloop.cpp:149
#42 0x00007fab23673585 in QEventLoop::exec (this=0x7fffa8b9c910, flags={i = -1464219360}) at kernel/qeventloop.cpp:196
#43 0x00007fab2367561c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#44 0x0000000000404b59 in main (argc=3, argv=0x7fffa8b9d088) at /var/tmp/portage/kde-base/kontact-4.3.1/work/kontact-4.3.1/kontact/src/main.cpp:218

This bug may be a duplicate of or related to bug 207732

Reported using DrKonqi