Application that crashed: kontact
Version of the application: 4.3.0 rc2
KDE Version: 4.2.96 (KDE 4.2.96 (KDE 4.3 RC2)) "release 142"
Qt Version: 4.5.2
Operating System: Linux 2.6.27.23-0.1-default x86_64
Distribution: "openSUSE 11.1 (x86_64)"

What I was doing when the application crashed:
Kontact crash after starting twice and closing one instance.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#5  0x00007fd340ed4db9 in KMFolder::noContent (this=<value optimized out>) at /usr/src/debug/kdepim-4.2.96/kmail/kmfolder.cpp:348
#6  0x00007fd340e8999a in KMail::FolderViewItem::updateCounts (this=0x1b44d00) at /usr/src/debug/kdepim-4.2.96/kmail/folderview.cpp:2841
#7  0x00007fd340e89ccd in KMail::FolderView::activateItemInternal (this=0x138d0f0, fvi=0x1b44d00, keepSelection=false, notifyManager=false, middleButton=false)
    at /usr/src/debug/kdepim-4.2.96/kmail/folderview.cpp:1014
#8  0x00007fd340e9072b in KMail::FavoriteFolderView::activateItemInternal (this=0x41, fvi=0x138d0f0, keepSelection=144, notifyManager=false, middleButton=<value optimized out>)
    at /usr/src/debug/kdepim-4.2.96/kmail/favoritefolderview.cpp:467
#9  0x00007fd340e81930 in KMail::FolderViewManager::viewFolderActivated (this=0x10686c0, view=0x1469aa0, fld=0x1274460, middleButton=false) at /usr/src/debug/kdepim-4.2.96/kmail/folderview.cpp:145
#10 0x00007fd340e89d48 in KMail::FolderView::activateItemInternal (this=0x1469aa0, fvi=0x1b13c40, keepSelection=false, notifyManager=true, middleButton=false)
    at /usr/src/debug/kdepim-4.2.96/kmail/folderview.cpp:1007
#11 0x00007fd340e8a6da in KMail::FolderView::qt_metacall (this=0x1469aa0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff6142e7c0)
    at /usr/src/debug/kdepim-4.2.96/build/kmail/folderview.moc:207
#12 0x00007fd340e8d7a6 in KMail::MainFolderView::qt_metacall (this=0x41, _c=20500720, _id=28482192, _a=0x7fd3416c2a00) at /usr/src/debug/kdepim-4.2.96/build/kmail/mainfolderview.moc:64
#13 0x00007fd354ad66e2 in QMetaObject::activate (sender=0x1469aa0, from_signal_index=<value optimized out>, to_signal_index=96, argv=0x7fd3416c2a00) at kernel/qobject.cpp:3113
#14 0x00007fd353d25800 in QTreeWidget::itemClicked (this=0x41, _t1=0x1b13c50, _t2=0) at .moc/release-shared/moc_qtreewidget.cpp:201
#15 0x00007fd353d32663 in QTreeWidget::qt_metacall (this=0x1469aa0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff6142e9b0) at .moc/release-shared/moc_qtreewidget.cpp:144
#16 0x00007fd357eb7535 in KPIM::TreeWidget::qt_metacall (this=0x41, _c=20500720, _id=28482192, _a=0x7fd3416c2a00) at /usr/src/debug/kdepim-4.2.96/build/libkdepim/moc_treewidget.cpp:68
#17 0x00007fd357f11566 in KPIM::FolderTreeWidget::qt_metacall (this=0x41, _c=20500720, _id=28482192, _a=0x7fd3416c2a00) at /usr/src/debug/kdepim-4.2.96/build/libkdepim/foldertreewidget.moc:68
#18 0x00007fd340e8a545 in KMail::FolderView::qt_metacall (this=0x41, _c=20500720, _id=28482192, _a=0x7fd3416c2a00) at /usr/src/debug/kdepim-4.2.96/build/kmail/folderview.moc:188
#19 0x00007fd340e8d7a6 in KMail::MainFolderView::qt_metacall (this=0x41, _c=20500720, _id=28482192, _a=0x7fd3416c2a00) at /usr/src/debug/kdepim-4.2.96/build/kmail/mainfolderview.moc:64
#20 0x00007fd354ad66e2 in QMetaObject::activate (sender=0x1469aa0, from_signal_index=<value optimized out>, to_signal_index=32, argv=0x7fd3416c2a00) at kernel/qobject.cpp:3113
#21 0x00007fd353cac4b5 in QAbstractItemView::clicked (this=0x41, _t1=<value optimized out>) at .moc/release-shared/moc_qabstractitemview.cpp:321
#22 0x00007fd353cb948e in QAbstractItemView::mouseReleaseEvent (this=0x1469aa0, event=0x7fff6142f6d0) at itemviews/qabstractitemview.cpp:1660
#23 0x00007fd353830aed in QWidget::event (this=0x1469aa0, event=0x7fff6142f6d0) at kernel/qwidget.cpp:7549
#24 0x00007fd353b867ab in QFrame::event (this=0x1469aa0, e=0x7fff6142f6d0) at widgets/qframe.cpp:559
#25 0x00007fd353cbc4ad in QAbstractItemView::viewportEvent (this=0x1469aa0, event=0x7fff6142f6d0) at itemviews/qabstractitemview.cpp:1476
#26 0x00007fd353cf3929 in QTreeView::viewportEvent (this=0x1469aa0, event=0x7fff6142f6d0) at itemviews/qtreeview.cpp:1266
#27 0x00007fd354ac0c48 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0x13962f0, event=0x7fff6142f6d0) at kernel/qcoreapplication.cpp:726
#28 0x00007fd3537dfadc in QApplicationPrivate::notify_helper (this=0x6472f0, receiver=0x13962f0, e=0x7fff6142f6d0) at kernel/qapplication.cpp:4052
#29 0x00007fd3537e84fa in QApplication::notify (this=<value optimized out>, receiver=0x13962f0, e=0x7fff6142f6d0) at kernel/qapplication.cpp:3758
#30 0x00007fd3558fe63b in KApplication::notify (this=0x7fff61431620, receiver=0x13962f0, event=0x7fff6142f6d0) at /usr/src/debug/kdelibs-4.2.96/kdeui/kernel/kapplication.cpp:302
#31 0x00007fd354ac194c in QCoreApplication::notifyInternal (this=0x7fff61431620, receiver=0x13962f0, event=0x7fff6142f6d0) at kernel/qcoreapplication.cpp:610
#32 0x00007fd3537e7748 in QApplicationPrivate::sendMouseEvent (receiver=0x13962f0, event=0x7fff6142f6d0, alienWidget=0x13962f0, nativeWidget=0x10606b0, buttonDown=<value optimized out>, 
    lastMouseReceiver=@0x7fd3541f3f30) at ../../src/corelib/kernel/qcoreapplication.h:216
#33 0x00007fd353851509 in QETWidget::translateMouseEvent (this=0x10606b0, event=<value optimized out>) at kernel/qapplication_x11.cpp:4407
#34 0x00007fd353850543 in QApplication::x11ProcessEvent (this=0x7fff61431620, event=0x7fff61431250) at kernel/qapplication_x11.cpp:3548
#35 0x00007fd353877864 in x11EventSourceDispatch (s=0x64a470, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#36 0x00007fd34e3960fb in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#37 0x00007fd34e3998cd in ?? () from /usr/lib64/libglib-2.0.so.0
#38 0x00007fd34e399a8b in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#39 0x00007fd354aead3f in QEventDispatcherGlib::processEvents (this=0x60d870, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#40 0x00007fd353876fef in QGuiEventDispatcherGlib::processEvents (this=0x41, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#41 0x00007fd354ac01d2 in QEventLoop::processEvents (this=<value optimized out>, flags={i = 1631786304}) at kernel/qeventloop.cpp:149
#42 0x00007fd354ac05a4 in QEventLoop::exec (this=0x7fff61431580, flags={i = 1631786384}) at kernel/qeventloop.cpp:201
#43 0x00007fd354ac2894 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#44 0x0000000000404995 in main (argc=3, argv=0x7fff61431d08) at /usr/src/debug/kdepim-4.2.96/kontact/src/main.cpp:218

This bug may be a duplicate of or related to bug 198791

Reported using DrKonqi