Application that crashed: korganizer
Version of the application: 4.3.0 pre
KDE Version: 4.2.90 (KDE 4.2.90 (KDE 4.3 Beta2))
Qt Version: 4.5.1
Operating System: Linux 2.6.28-13-generic i686
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
I just added an event in "akonadi resource" and I was switching on/of akonadi resource and akonadi compatibility resource to check where the event was shown and baaaaang, korganizer crashed

 -- Backtrace:
Application: KOrganizer (korganizer), signal: Segmentation fault
[KCrash Handler]
#6  0xb7b292ab in KCal::CalendarLocal::close (this=0x9e872cc) at /usr/include/qt4/QtCore/qalgorithms.h:350
#7  0xb2754e81 in KCal::ResourceAkonadi::Private::clearResource (this=0x9e87268) at /build/buildd/kdepim-4.2.90/kresources/akonadi/kcal/resourceakonadi_p.cpp:118
#8  0xb277046f in ResourcePrivateBase::clear (this=0x9e87268) at /build/buildd/kdepim-4.2.90/kresources/akonadi/shared/resourceprivatebase.cpp:262
#9  0xb2752796 in KCal::ResourceAkonadi::doLoad (this=0x9471388, syncCache=false) at /build/buildd/kdepim-4.2.90/kresources/akonadi/kcal/resourceakonadi.cpp:398
#10 0xb7b72a0f in KCal::ResourceCalendar::load (this=0x9471388) at /build/buildd/kdepimlibs-4.2.90/kcal/resourcecalendar.cpp:168
#11 0xb793d0a3 in ResourceItem::stateChange (this=0x9e63270, active=true) at /build/buildd/kdepim-4.2.90/korganizer/resourceview.cpp:200
#12 0xb793d19d in ResourceView::slotItemClicked (this=0x92f1d28, i=0x9e63270) at /build/buildd/kdepim-4.2.90/korganizer/resourceview.cpp:817
#13 0xb79414e5 in ResourceView::qt_metacall (this=0x92f1d28, _c=QMetaObject::InvokeMetaMethod, _id=19, _a=0xbfb88818) at /build/buildd/kdepim-4.2.90/obj-i486-linux-gnu/korganizer/resourceview.moc:121
#14 0xb61a6a58 in QMetaObject::activate (sender=0x92e1e98, from_signal_index=96, to_signal_index=96, argv=0xbfb88818) at kernel/qobject.cpp:3120
#15 0xb61a76e2 in QMetaObject::activate (sender=0x92e1e98, m=0xb6eeea70, local_signal_index=1, argv=0xbfb88818) at kernel/qobject.cpp:3194
#16 0xb6c42d49 in QTreeWidget::itemClicked (this=0x92e1e98, _t1=0x9e63270, _t2=0) at .moc/release-shared/moc_qtreewidget.cpp:201
#17 0xb6c470b5 in QTreeWidgetPrivate::_q_emitItemClicked (this=0x92fbd98, index=@0x9377ca8) at itemviews/qtreewidget.cpp:2228
#18 0xb6c50471 in QTreeWidget::qt_metacall (this=0x92e1e98, _c=QMetaObject::InvokeMetaMethod, _id=16, _a=0xbfb8894c) at .moc/release-shared/moc_qtreewidget.cpp:144
#19 0xb61a6a58 in QMetaObject::activate (sender=0x92e1e98, from_signal_index=32, to_signal_index=32, argv=0xbfb8894c) at kernel/qobject.cpp:3120
#20 0xb61a76e2 in QMetaObject::activate (sender=0x92e1e98, m=0xb6eed9c4, local_signal_index=1, argv=0xbfb8894c) at kernel/qobject.cpp:3194
#21 0xb6bc4c73 in QAbstractItemView::clicked (this=0x92e1e98, _t1=@0x9377ca8) at .moc/release-shared/moc_qabstractitemview.cpp:321
#22 0xb6bd2565 in QAbstractItemView::mouseReleaseEvent (this=0x92e1e98, event=0xbfb89268) at itemviews/qabstractitemview.cpp:1655
#23 0xb6c14bec in QTreeView::mouseReleaseEvent (this=0x92e1e98, event=0xbfb89268) at itemviews/qtreeview.cpp:1794
#24 0xb66a58c3 in QWidget::event (this=0x92e1e98, event=0xbfb89268) at kernel/qwidget.cpp:7521
#25 0xb6a832c3 in QFrame::event (this=0x92e1e98, e=0xbfb89268) at widgets/qframe.cpp:559
#26 0xb6b2333f in QAbstractScrollArea::viewportEvent (this=0x92e1e98, e=0x9ea5a30) at widgets/qabstractscrollarea.cpp:962
#27 0xb6bd51f7 in QAbstractItemView::viewportEvent (this=0x92e1e98, event=0xbfb89268) at itemviews/qabstractitemview.cpp:1471
#28 0xb6c0f3b6 in QTreeView::viewportEvent (this=0x92e1e98, event=0xbfb89268) at itemviews/qtreeview.cpp:1264
#29 0xb6b25945 in QAbstractScrollAreaFilter::eventFilter (this=0x92fcaf8, o=0x92dfa70, e=0xbfb89268) at widgets/qabstractscrollarea_p.h:100
#30 0xb618f9ca in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x8f283f0, receiver=0x92dfa70, event=0xbfb89268) at kernel/qcoreapplication.cpp:726
#31 0xb664ebaa in QApplicationPrivate::notify_helper (this=0x8f283f0, receiver=0x92dfa70, e=0xbfb89268) at kernel/qapplication.cpp:4053
#32 0xb6657851 in QApplication::notify (this=0xbfb8abac, receiver=0x92dfa70, e=0xbfb89268) at kernel/qapplication.cpp:3759
#33 0xb7e9ce8d in KApplication::notify (this=0xbfb8abac, receiver=0x92dfa70, event=0xbfb89268) at /build/buildd/kde4libs-4.2.90/kdeui/kernel/kapplication.cpp:302
#34 0xb61907ab in QCoreApplication::notifyInternal (this=0xbfb8abac, receiver=0x92dfa70, event=0xbfb89268) at kernel/qcoreapplication.cpp:610
#35 0xb66568be in QApplicationPrivate::sendMouseEvent (receiver=0x92dfa70, event=0xbfb89268, alienWidget=0x92dfa70, nativeWidget=0x9029f38, buttonDown=0xb6efaaa0, lastMouseReceiver=@0xb6efaaa4)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#36 0xb66c6aee in QETWidget::translateMouseEvent (this=0x9029f38, event=0xbfb8a8fc) at kernel/qapplication_x11.cpp:4448
#37 0xb66c5ead in QApplication::x11ProcessEvent (this=0xbfb8abac, event=0xbfb8a8fc) at kernel/qapplication_x11.cpp:3444
#38 0xb66f106a in x11EventSourceDispatch (s=0x8f2dc70, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#39 0xb5289b88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#40 0xb528d0eb in ?? () from /usr/lib/libglib-2.0.so.0
#41 0xb528d268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#42 0xb61bc1d8 in QEventDispatcherGlib::processEvents (this=0x8f23340, flags={i = -1078416712}) at kernel/qeventdispatcher_glib.cpp:324
#43 0xb66f0765 in QGuiEventDispatcherGlib::processEvents (this=0x8f23340, flags={i = -1078416664}) at kernel/qguieventdispatcher_glib.cpp:202
#44 0xb618edda in QEventLoop::processEvents (this=0xbfb8ab60, flags={i = -1078416600}) at kernel/qeventloop.cpp:149
#45 0xb618f21a in QEventLoop::exec (this=0xbfb8ab60, flags={i = -1078416536}) at kernel/qeventloop.cpp:200
#46 0xb61916c9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#47 0xb664ea47 in QApplication::exec () at kernel/qapplication.cpp:3526
#48 0x0804ec64 in main (argc=0, argv=0x0) at /build/buildd/kdepim-4.2.90/korganizer/main.cpp:61

Reported using DrKonqi