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 x86_64
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
I quicly switched between all the modules by clicking in the module selection bar, holding the mouse button and sliding over all the icons several times. Suddenly Kontact crashed.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#5  0x00007fc93919c2d8 in KOTodoModel::rowCount (this=0x4e3ac20, parent=@0x7fff649419b0) at /usr/include/qt4/QtCore/qlist.h:87
#6  0x00007fc93919c15c in KOTodoModel::index (this=0x4e3ac20, row=1, column=3, parent=@0x7fff649419b0) at /build/buildd/kdepim-4.3.0/korganizer/views/todoview/kotodomodel.cpp:605
#7  0x00007fc9391a4a96 in KOTodoViewSortFilterProxyModel::lessThan (this=0x57cfdc0, left=@0x7fff64941c30, right=@0x7fff64941c10) at /usr/include/qt4/QtCore/qabstractitemmodel.h:372
#8  0x00007fc957f8aa56 in QAlgorithmsPrivate::qMerge<int*, int const, QSortFilterProxyModelGreaterThan> (begin=0x607bcb4, pivot=<value optimized out>, end=0x607bcbc, t=@0x607bcb0, lessThan=
      {sort_column = 1687428240, source_parent = {r = 1687427824, c = 32767, p = 0x7fff649419b0, m = 0x1f1a}, source_model = 0x607d290, proxy_model = 0x7fc956eac480})
    at itemviews/qsortfilterproxymodel.cpp:94
#9  0x00007fc957f8b098 in QAlgorithmsPrivate::qStableSortHelper<int*, int, QSortFilterProxyModelGreaterThan> (begin=0x607bcb4, end=0x607bcbc, t=@0x607bcb0, lessThan=
      {sort_column = 1687428480, source_parent = {r = 3, c = 0, p = 0x1, m = 0x7fff649419b0}, source_model = 0x4e3ac20, proxy_model = 0x607bcbc})
    at ../../include/QtCore/../../src/corelib/tools/qalgorithms.h:487
#10 0x00007fc957f8b03b in QAlgorithmsPrivate::qStableSortHelper<int*, int, QSortFilterProxyModelGreaterThan> (begin=0x607bcb0, end=0x607bcbc, t=@0x607bcb0, lessThan=
      {sort_column = 1687428720, source_parent = {r = 3, c = 0, p = 0x1, m = 0x7fff649419b0}, source_model = 0x4e3ac20, proxy_model = 0x607bcbc})
    at ../../include/QtCore/../../src/corelib/tools/qalgorithms.h:486
#11 0x00007fc957f8afde in QAlgorithmsPrivate::qStableSortHelper<int*, int, QSortFilterProxyModelGreaterThan> (begin=0x607bcb0, end=0x607bcc8, t=@0x607bcb0, lessThan=
      {sort_column = 1687428880, source_parent = {r = 3, c = 0, p = 0x1, m = 0x7fff649419b0}, source_model = 0x4e3ac20, proxy_model = 0x607bcc8})
    at ../../include/QtCore/../../src/corelib/tools/qalgorithms.h:485
#12 0x00007fc957f83f1a in QSortFilterProxyModelPrivate::sort_source_rows (this=<value optimized out>, source_rows=@0x607bc60, source_parent=<value optimized out>)
    at ../../include/QtCore/../../src/corelib/tools/qalgorithms.h:229
#13 0x00007fc957f85c01 in QSortFilterProxyModelPrivate::sort (this=0x3606ca0) at itemviews/qsortfilterproxymodel.cpp:362
#14 0x00007fc957f87cfa in QSortFilterProxyModel::qt_metacall (this=0x57cfdc0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff64942170)
    at .moc/release-shared/moc_qsortfilterproxymodel.cpp:126
#15 0x00007fc9391a4625 in KOTodoViewSortFilterProxyModel::qt_metacall (this=0x4e3ac20, _c=1687427504, _id=1, _a=0x3)
    at /build/buildd/kdepim-4.3.0/obj-x86_64-linux-gnu/korganizer/kotodoviewsortfilterproxymodel.moc:62
#16 0x00007fc956ea1ea2 in QMetaObject::activate (sender=0x4e3ac20, from_signal_index=<value optimized out>, to_signal_index=9, argv=0x3) at kernel/qobject.cpp:3113
#17 0x00007fc956ed8864 in QAbstractItemModel::rowsInserted (this=0x4e3ac20, _t1=<value optimized out>, _t2=0, _t3=0) at .moc/release-shared/moc_qabstractitemmodel.cpp:159
#18 0x00007fc956e878e5 in QAbstractItemModel::endInsertRows (this=0x4e3ac20) at kernel/qabstractitemmodel.cpp:2081
#19 0x00007fc93919df33 in KOTodoModel::insertTodo (this=0x4e3ac20, todo=0x7fc93426f120, checkRelated=<value optimized out>) at /build/buildd/kdepim-4.3.0/korganizer/views/todoview/kotodomodel.cpp:537
#20 0x00007fc93919e2c8 in KOTodoModel::insertTodo (this=0x4e3ac20, todo=0x7fc934243080, checkRelated=<value optimized out>) at /build/buildd/kdepim-4.3.0/korganizer/views/todoview/kotodomodel.cpp:516
#21 0x00007fc93919f134 in KOTodoModel::reloadTodos (this=0x4e3ac20) at /build/buildd/kdepim-4.3.0/korganizer/views/todoview/kotodomodel.cpp:234
#22 0x00007fc9391c2230 in CalendarView::updateView (this=0x36504a0, start=@0x5fce728, end=@0x5fce758, updateTodos=3) at /build/buildd/kdepim-4.3.0/korganizer/calendarview.cpp:798
#23 0x00007fc9391c41e1 in CalendarView::updateView (this=0x36504a0) at /build/buildd/kdepim-4.3.0/korganizer/calendarview.cpp:810
#24 0x00007fc9391d38ad in KOViewManager::showView (this=0x361fa80, view=<value optimized out>) at /build/buildd/kdepim-4.3.0/korganizer/koviewmanager.cpp:162
#25 0x00007fc93925a9e6 in CalendarAdaptor::qt_metacall (this=0x5855d30, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff64942a30)
    at /build/buildd/kdepim-4.3.0/obj-x86_64-linux-gnu/korganizer/calendaradaptor.cpp:123
#26 0x00007fc9571a6453 in QDBusConnectionPrivate::deliverCall (this=0x1ccb790, object=0x5855d30, msg=@0x7fff649431b0, metaTypes=@0x4d6e3f0, slotIdx=18) at qdbusintegrator.cpp:891
#27 0x00007fc9571a7778 in QDBusConnectionPrivate::activateCall (this=0x1ccb790, object=0x5855d30, flags=273, msg=@0x7fff649431b0) at qdbusintegrator.cpp:803
#28 0x00007fc9571a7da1 in QDBusConnectionPrivate::activateObject (this=0x1ccb790, node=@0x7fff64942da0, msg=@0x7fff649431b0, pathStartPos=<value optimized out>) at qdbusintegrator.cpp:1347
#29 0x00007fc9571a869d in QDBusConnectionPrivate::handleObjectCall (this=0x1ccb790, msg=@0x7fff649431b0) at qdbusintegrator.cpp:1443
#30 0x00007fc9571a8bbd in QDBusConnectionPrivate::handleMessage (this=0x1ccb790, amsg=@0x7fff649431b0) at qdbusintegrator.cpp:535
#31 0x00007fc9571a91bc in QDBusConnectionPrivate::sendWithReplyLocal (this=0x1ccb790, message=@0x7fff64943520) at qdbusintegrator.cpp:1797
#32 0x00007fc9571aa268 in QDBusConnectionPrivate::sendWithReplyAsync (this=0x1ccb790, message=@0x7fff64943520, timeout=<value optimized out>) at qdbusintegrator.cpp:1832
#33 0x00007fc9571925e0 in QDBusConnection::asyncCall (this=<value optimized out>, message=@0x0, timeout=3) at qdbusconnection.cpp:542
#34 0x00007fc9571b225b in QDBusAbstractInterface::asyncCallWithArgumentList (this=<value optimized out>, method=@0x7fff64943580, args=@0x7fff64943590) at qdbusabstractinterface.cpp:430
#35 0x00007fc94521e2b5 in KOrganizerPlugin::select (this=<value optimized out>) at /build/buildd/kdepim-4.3.0/obj-x86_64-linux-gnu/kontact/plugins/korganizer/calendarinterface.h:140
#36 0x00007fc95b8c250d in Kontact::MainWindow::selectPlugin (this=0x1e42850, plugin=0x21a5150) at /build/buildd/kdepim-4.3.0/kontact/src/mainwindow.cpp:793
#37 0x00007fc95b8c6572 in Kontact::MainWindow::qt_metacall (this=0x1e42850, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff64943b20)
    at /build/buildd/kdepim-4.3.0/obj-x86_64-linux-gnu/kontact/src/mainwindow.moc:107
#38 0x00007fc956ea1ea2 in QMetaObject::activate (sender=0x1e3c9e0, from_signal_index=<value optimized out>, to_signal_index=27, argv=0x3) at kernel/qobject.cpp:3113
#39 0x00007fc95b8c7a4f in Kontact::SidePaneBase::pluginSelected (this=0x4e3ac20, _t1=0x21a5150) at /build/buildd/kdepim-4.3.0/obj-x86_64-linux-gnu/kontact/src/sidepanebase.moc:84
#40 0x00007fc95b8c7adf in Kontact::SidePaneBase::qt_metacall (this=0x1e3c9e0, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0x7fff64943c70)
    at /build/buildd/kdepim-4.3.0/obj-x86_64-linux-gnu/kontact/src/sidepanebase.moc:71
#41 0x00007fc95b8c7cae in Kontact::IconSidePane::qt_metacall (this=0x4e3ac20, _c=1687427504, _id=1, _a=0x3) at /build/buildd/kdepim-4.3.0/obj-x86_64-linux-gnu/kontact/src/iconsidepane.moc:133
#42 0x00007fc956ea1ea2 in QMetaObject::activate (sender=0x1e3d0f0, from_signal_index=<value optimized out>, to_signal_index=70, argv=0x3) at kernel/qobject.cpp:3113
#43 0x00007fc95b8c7d5f in Kontact::Navigator::pluginActivated (this=0x4e3ac20, _t1=0x21a5150) at /build/buildd/kdepim-4.3.0/obj-x86_64-linux-gnu/kontact/src/iconsidepane.moc:90
#44 0x00007fc95b8c8525 in Kontact::Navigator::qt_metacall (this=0x1e3d0f0, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0x7fff64943d90)
    at /build/buildd/kdepim-4.3.0/obj-x86_64-linux-gnu/kontact/src/iconsidepane.moc:76
#45 0x00007fc956ea1ea2 in QMetaObject::activate (sender=0x1ce6db0, from_signal_index=<value optimized out>, to_signal_index=5, argv=0x3) at kernel/qobject.cpp:3113
#46 0x00007fc957f4b0ea in QItemSelectionModel::currentChanged (this=0x4e3ac20, _t1=<value optimized out>, _t2=<value optimized out>) at .moc/release-shared/moc_qitemselectionmodel.cpp:153
#47 0x00007fc957f4b234 in QItemSelectionModel::setCurrentIndex (this=0x1ce6db0, index=<value optimized out>, command={i = 1687437280}) at itemviews/qitemselectionmodel.cpp:1123
#48 0x00007fc957f00407 in QAbstractItemView::mouseMoveEvent (this=<value optimized out>, event=0x7fff64944c20) at itemviews/qabstractitemview.cpp:1623
#49 0x00007fc957f1705a in QListView::mouseMoveEvent (this=0x4e3ac20, e=0x7fff649419b0) at itemviews/qlistview.cpp:831
#50 0x00007fc957a5bf58 in QWidget::event (this=0x1e3d0f0, event=0x7fff64944c20) at kernel/qwidget.cpp:7534
#51 0x00007fc957dcef0b in QFrame::event (this=0x1e3d0f0, e=0x7fff64944c20) at widgets/qframe.cpp:559
#52 0x00007fc957f04c0d in QAbstractItemView::viewportEvent (this=0x1e3d0f0, event=0x7fff64944c20) at itemviews/qabstractitemview.cpp:1476
#53 0x00007fc956e8b9b8 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0x1e3e660, event=0x7fff64944c20) at kernel/qcoreapplication.cpp:726
#54 0x00007fc957a0af1c in QApplicationPrivate::notify_helper (this=0x1ce1390, receiver=0x1e3e660, e=0x7fff64944c20) at kernel/qapplication.cpp:4052
#55 0x00007fc957a138ea in QApplication::notify (this=<value optimized out>, receiver=0x1e3e660, e=0x7fff64944c20) at kernel/qapplication.cpp:3758
#56 0x00007fc958e0f71b in KApplication::notify (this=0x7fff64946b70, receiver=0x1e3e660, event=0x7fff64944c20) at /build/buildd/kde4libs-4.3.0/kdeui/kernel/kapplication.cpp:302
#57 0x00007fc956e8c6ac in QCoreApplication::notifyInternal (this=0x7fff64946b70, receiver=0x1e3e660, event=0x7fff64944c20) at kernel/qcoreapplication.cpp:610
#58 0x00007fc957a12b38 in QApplicationPrivate::sendMouseEvent (receiver=0x1e3e660, event=0x7fff64944c20, alienWidget=0x1e3e660, nativeWidget=0x1e42850, buttonDown=<value optimized out>, 
    lastMouseReceiver=@0x7fc958442010) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#59 0x00007fc957a7cb19 in QETWidget::translateMouseEvent (this=0x1e42850, event=<value optimized out>) at kernel/qapplication_x11.cpp:4409
#60 0x00007fc957a7bb53 in QApplication::x11ProcessEvent (this=0x7fff64946b70, event=0x7fff649467a0) at kernel/qapplication_x11.cpp:3550
#61 0x00007fc957aa4454 in x11EventSourceDispatch (s=0x1cd79b0, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#62 0x00007fc9505dd20a in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#63 0x00007fc9505e08e0 in ?? () from /usr/lib/libglib-2.0.so.0
#64 0x00007fc9505e0a7c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#65 0x00007fc956eb5a8f in QEventDispatcherGlib::processEvents (this=0x1cae0a0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#66 0x00007fc957aa3bdf in QGuiEventDispatcherGlib::processEvents (this=0x4e3ac20, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#67 0x00007fc956e8af42 in QEventLoop::processEvents (this=<value optimized out>, flags={i = 1687448208}) at kernel/qeventloop.cpp:149
#68 0x00007fc956e8b314 in QEventLoop::exec (this=0x7fff64946ad0, flags={i = 1687448288}) at kernel/qeventloop.cpp:201
#69 0x00007fc956e8d5e4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#70 0x0000000000404945 in main (argc=1, argv=0x7fff64947258) at /build/buildd/kdepim-4.3.0/kontact/src/main.cpp:218

Reported using DrKonqi