Application: kontact (4.4.2)
KDE Platform Version: 4.4.2 (KDE 4.4.2)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-24-generic x86_64
Distribution: Ubuntu 10.04.1 LTS

-- Information about the crash:
Was just using Kontact Calandar and Kmail, was switching to anoter area and crashed. Didn't pull any bug report matches even though the error was the same as another i just reported before.

The crash can be reproduced some of the time.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f958e0c7780 (LWP 1880))]

Thread 2 (Thread 0x7f9566b5f710 (LWP 1898)):
#0  0x00007f958b19af83 in *__GI___poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f9583ccf4a9 in ?? () from /lib/libglib-2.0.so.0
#2  0x00007f9583ccf8fc in g_main_context_iteration () from /lib/libglib-2.0.so.0
#3  0x00007f958c586566 in QEventDispatcherGlib::processEvents (this=0x1911cf0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:414
#4  0x00007f958c55b992 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#5  0x00007f958c55bd6c in QEventLoop::exec (this=0x7f9566b5ed90, flags=) at kernel/qeventloop.cpp:201
#6  0x00007f958c465d59 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:487
#7  0x00007f958c53c178 in QInotifyFileSystemWatcherEngine::run (this=0x18eeec0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f958c468775 in QThreadPrivate::start (arg=0x18eeec0) at thread/qthread_unix.cpp:248
#9  0x00007f95862469ca in start_thread (arg=<value optimized out>) at pthread_create.c:300
#10 0x00007f958b1a76fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f958e0c7780 (LWP 1880)):
[KCrash Handler]
#5  0x0000000000000000 in ?? ()
#6  0x00007f958861e976 in KCal::IncidenceFormatter::resourceString (calendar=<value optimized out>, incidence=0x23785e0) at ../../kcal/incidenceformatter.cpp:3089
#7  0x00007f958862ecfd in KCal::IncidenceFormatter::ToolTipVisitor::generateToolTip (this=<value optimized out>, incidence=0x23785e0, dtRangeText=) at ../../kcal/incidenceformatter.cpp:2468
#8  0x00007f958862f576 in KCal::IncidenceFormatter::ToolTipVisitor::visit (this=0x7fff217cf000, event=0x23785e0) at ../../kcal/incidenceformatter.cpp:2433
#9  0x00007f958861ef28 in KCal::IncidenceFormatter::ToolTipVisitor::act (calendar=<value optimized out>, incidence=0x23785e0, date=..., richText=<value optimized out>, spec=<value optimized out>)
    at ../../kcal/incidenceformatter.cpp:2290
#10 KCal::IncidenceFormatter::toolTipStr (calendar=<value optimized out>, incidence=0x23785e0, date=..., richText=<value optimized out>, spec=<value optimized out>)
    at ../../kcal/incidenceformatter.cpp:2521
#11 0x00007f9565c14d94 in KOrg::IncidenceMonthItem::toolTipText (this=0x239d8f0) at ../../korganizer/views/monthview/monthitem.cpp:565
#12 0x00007f9565c180b3 in MonthGraphicsItem (this=<value optimized out>, manager=0x239d8f0) at ../../korganizer/views/monthview/monthgraphicsitems.cpp:144
#13 0x00007f9565c142c5 in KOrg::MonthItem::updateMonthGraphicsItems (this=0x239d8f0) at ../../korganizer/views/monthview/monthitem.cpp:93
#14 0x00007f9565c116b5 in KOrg::MonthView::reloadIncidences (this=0x1c90110) at ../../korganizer/views/monthview/monthview.cpp:440
#15 0x00007f9565c1257f in KOrg::MonthView::setStartDate (this=0x1c90110, start=<value optimized out>) at ../../korganizer/views/monthview/monthview.cpp:296
#16 0x00007f9565c125de in KOrg::MonthView::showDates (this=0x1c90110, start=..., end=<value optimized out>) at ../../korganizer/views/monthview/monthview.cpp:283
#17 0x00007f9565c57d76 in KOViewManager::updateView (this=0x1a83970, start=..., end=...) at ../../korganizer/koviewmanager.cpp:237
#18 0x00007f9565c4637a in CalendarView::updateView (this=0x1b2e500, start=..., end=..., updateTodos=<value optimized out>) at ../../korganizer/calendarview.cpp:802
#19 0x00007f9565c47810 in CalendarView::updateView (this=0x1b2e500) at ../../korganizer/calendarview.cpp:813
#20 0x00007f9565c56608 in CalendarView::qt_metacall (this=0x1b2e500, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff217cf930) at ./calendarview.moc:589
#21 0x00007f958c56fe3f in QMetaObject::activate (sender=0x1c67f00, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x23785e0) at kernel/qobject.cpp:3293
#22 0x00007f95885f67bc in KCal::Calendar::qt_metacall (this=0x1c67f00, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=<value optimized out>) at ./calendar.moc:82
#23 0x00007f9588656820 in KCal::CalendarResources::qt_metacall (this=0x7fff217ced20, _c=31838976, _id=36250864, _a=0x23785e0) at ./calendarresources.moc:85
#24 0x00007f958c56fe3f in QMetaObject::activate (sender=0x257afd0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x23785e0) at kernel/qobject.cpp:3293
#25 0x00007f958864895f in KCal::ResourceCalendar::resourceChanged (this=0x7fff217ced20, _t1=0x257afd0) at ./resourcecalendar.moc:123
#26 0x00007f95645ae2f2 in ?? () from /usr/lib/kde4/kcal_akonadi.so
#27 0x00007f95645ae5c4 in ?? () from /usr/lib/kde4/kcal_akonadi.so
#28 0x00007f958c56fe3f in QMetaObject::activate (sender=0x7f956801ab60, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x23785e0) at kernel/qobject.cpp:3293
#29 0x00007f95645b4c5a in ?? () from /usr/lib/kde4/kcal_akonadi.so
#30 0x00007f95645b53ee in ?? () from /usr/lib/kde4/kcal_akonadi.so
#31 0x00007f95645ca457 in ?? () from /usr/lib/kde4/kcal_akonadi.so
#32 0x00007f95645a8f9b in ?? () from /usr/lib/kde4/kcal_akonadi.so
#33 0x00007f9565cbf59d in ResourceItem::stateChange (this=0x1fe03f0, active=240) at ../../korganizer/resourceview.cpp:197
#34 0x00007f9565cbf602 in ResourceView::slotItemClicked (this=<value optimized out>, i=0x1fe03f0) at ../../korganizer/resourceview.cpp:817
#35 0x00007f9565cc33aa in ResourceView::qt_metacall (this=0x1ccc420, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff217cff60) at ./resourceview.moc:127
#36 0x00007f958c56fe3f in QMetaObject::activate (sender=0x1ccd450, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x23785e0) at kernel/qobject.cpp:3293
#37 0x00007f958beb2430 in QTreeWidget::itemClicked (this=0x7fff217ced20, _t1=0x1fe03f0, _t2=0) at .moc/release-shared/moc_qtreewidget.cpp:207
#38 0x00007f958bebe0b8 in QTreeWidget::qt_metacall (this=0x1ccd450, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff217d00a0) at .moc/release-shared/moc_qtreewidget.cpp:150
#39 0x00007f958c56fe3f in QMetaObject::activate (sender=0x1ccd450, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x23785e0) at kernel/qobject.cpp:3293
#40 0x00007f958be32945 in QAbstractItemView::clicked (this=0x7fff217ced20, _t1=<value optimized out>) at .moc/release-shared/moc_qabstractitemview.cpp:331
#41 0x00007f958be3f8c8 in QAbstractItemView::mouseReleaseEvent (this=0x1ccd450, event=0x7fff217d0ea0) at itemviews/qabstractitemview.cpp:1780
#42 0x00007f958b96c582 in QWidget::event (this=0x1ccd450, event=0x7fff217d0ea0) at kernel/qwidget.cpp:7998
#43 0x00007f958bd134e6 in QFrame::event (this=0x1ccd450, e=0x7fff217d0ea0) at widgets/qframe.cpp:557
#44 0x00007f958be4226b in QAbstractItemView::viewportEvent (this=0x1ccd450, event=0x7fff217d0ea0) at itemviews/qabstractitemview.cpp:1610
#45 0x00007f958be7d902 in QTreeView::viewportEvent (this=0x1ccd450, event=0x7fff217d0ea0) at itemviews/qtreeview.cpp:1248
#46 0x00007f958c55c487 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0x1ccb000, event=0x7fff217d0ea0) at kernel/qcoreapplication.cpp:819
#47 0x00007f958b9161fc in QApplicationPrivate::notify_helper (this=0xc4c620, receiver=0x1ccb000, e=0x7fff217d0ea0) at kernel/qapplication.cpp:4296
#48 0x00007f958b91cecb in QApplication::notify (this=0x7fff217d1bb0, receiver=0x1ccb000, e=0x7fff217d0ea0) at kernel/qapplication.cpp:3865
#49 0x00007f958cf45526 in KApplication::notify (this=0x7fff217d1bb0, receiver=0x1ccb000, event=0x7fff217d0ea0) at ../../kdeui/kernel/kapplication.cpp:302
#50 0x00007f958c55d06c in QCoreApplication::notifyInternal (this=0x7fff217d1bb0, receiver=0x1ccb000, event=0x7fff217d0ea0) at kernel/qcoreapplication.cpp:704
#51 0x00007f958b91c0ae in QCoreApplication::sendEvent (receiver=0x1ccb000, event=0x7fff217d0ea0, alienWidget=0x1ccb000, nativeWidget=0x1ccd450, buttonDown=<value optimized out>, 
    lastMouseReceiver=<value optimized out>, spontaneous=true) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#52 QApplicationPrivate::sendMouseEvent (receiver=0x1ccb000, event=0x7fff217d0ea0, alienWidget=0x1ccb000, nativeWidget=0x1ccd450, buttonDown=<value optimized out>, 
    lastMouseReceiver=<value optimized out>, spontaneous=true) at kernel/qapplication.cpp:2965
#53 0x00007f958b99bf65 in QETWidget::translateMouseEvent (this=0x1ccd450, event=<value optimized out>) at kernel/qapplication_x11.cpp:4368
#54 0x00007f958b99a8ac in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7fff217d17c0) at kernel/qapplication_x11.cpp:3501
#55 0x00007f958b9c6882 in x11EventSourceDispatch (s=0xc5bcd0, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#56 0x00007f9583ccb8c2 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#57 0x00007f9583ccf748 in ?? () from /lib/libglib-2.0.so.0
#58 0x00007f9583ccf8fc in g_main_context_iteration () from /lib/libglib-2.0.so.0
#59 0x00007f958c586513 in QEventDispatcherGlib::processEvents (this=0xc1fd70, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:412
#60 0x00007f958b9c646e in QGuiEventDispatcherGlib::processEvents (this=0x7fff217ced20, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#61 0x00007f958c55b992 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#62 0x00007f958c55bd6c in QEventLoop::exec (this=0x7fff217d1af0, flags=) at kernel/qeventloop.cpp:201
#63 0x00007f958c55faab in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#64 0x0000000000403e8e in main (argc=<value optimized out>, argv=<value optimized out>) at ../../../kontact/src/main.cpp:224

Reported using DrKonqi