Application that crashed: kontact
Version of the application: 4.3.0 pre
KDE Version: 4.2.86 (KDE 4.2.86 (KDE 4.3 >= 20090514))
Qt Version: 4.5.1
Operating System: Linux 2.6.27.21-0.1-default x86_64
Distribution: "openSUSE 11.1 (x86_64)"

What I was doing when the application crashed:
I was cycling through the emails using the + key when kmail (running inside kontact) crashed. This happens regularly when cycling too fast between emails. The emails i was cycling are locally stored. This happens fairly regularly, i would say at least once a day and that crash also occured in 4.2.

 -- Backtrace:
Application: Kontact (kontact), signal: Aborted
[KCrash Handler]
#5  0x00007f928dff6645 in raise () from /lib64/libc.so.6
#6  0x00007f928dff7c33 in abort () from /lib64/libc.so.6
#7  0x00007f928fd9a785 in qt_message_output(QtMsgType, char const*) () from /opt/kde4-trunk/qt/lib/libQtCore.so.4
#8  0x00007f928fd9a8a0 in qFatal(char const*, ...) () from /opt/kde4-trunk/qt/lib/libQtCore.so.4
#9  0x00007f927cc2d63e in QVector<KMMsgBase*>::operator[] (this=0xd9bd68, i=30488) at /opt/kde4-trunk/qt/include/QtCore/qvector.h:337
#10 0x00007f927cc4f8cd in KMFolderIndex::getMsgBase (this=<value optimized out>, idx=7038) at /home/kde-devel-trunk/kde/src/KDE/kdepim/kmail/kmfolderindex.h:73
#11 0x00007f927cbd3d83 in FolderStorage::setStatus (this=0x1b7e, idx=7038, status=@0x6, toggle=255) at /home/kde-devel-trunk/kde/src/KDE/kdepim/kmail/folderstorage.cpp:1083
#12 0x00007f927cbd4577 in FolderStorage::setStatus (this=0xd9bcf0, ids=@0x1ba7dc8, status=@0x6c2d698, toggle=false) at /home/kde-devel-trunk/kde/src/KDE/kdepim/kmail/folderstorage.cpp:1098
#13 0x00007f927cd05489 in KMSetStatusCommand::execute (this=0x6c2d650) at /home/kde-devel-trunk/kde/src/KDE/kdepim/kmail/kmcommands.cpp:1660
#14 0x00007f927cd10b5e in KMCommand::slotPostTransfer (this=0x6c2d650, result=KMCommand::OK) at /home/kde-devel-trunk/kde/src/KDE/kdepim/kmail/kmcommands.cpp:273
#15 0x00007f927cd10d66 in KMCommand::qt_metacall (this=0x6c2d650, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff9c8b5460)
    at /home/kde-devel-trunk/kde/build/KDE/kdepim/kmail/kmcommands.moc:87
#16 0x00007f928fe887cd in QMetaObject::activate(QObject*, int, int, void**) () from /opt/kde4-trunk/qt/lib/libQtCore.so.4
#17 0x00007f927ccfaa2e in KMCommand::messagesTransfered (this=0x1b7e, _t1=KMCommand::OK) at /home/kde-devel-trunk/kde/build/KDE/kdepim/kmail/kmcommands.moc:102
#18 0x00007f927cd10a70 in KMCommand::transferSelectedMsgs (this=0x6c2d650) at /home/kde-devel-trunk/kde/src/KDE/kdepim/kmail/kmcommands.cpp:367
#19 0x00007f927cd1182d in KMCommand::slotStart (this=0x6c2d650) at /home/kde-devel-trunk/kde/src/KDE/kdepim/kmail/kmcommands.cpp:265
#20 0x00007f927cd10d4a in KMCommand::qt_metacall (this=0x6c2d650, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff9c8b56e0)
    at /home/kde-devel-trunk/kde/build/KDE/kdepim/kmail/kmcommands.moc:86
#21 0x00007f928fe887cd in QMetaObject::activate(QObject*, int, int, void**) () from /opt/kde4-trunk/qt/lib/libQtCore.so.4
#22 0x00007f928fe8ec6f in ?? () from /opt/kde4-trunk/qt/lib/libQtCore.so.4
#23 0x00007f928fe84e43 in QObject::event(QEvent*) () from /opt/kde4-trunk/qt/lib/libQtCore.so.4
#24 0x00007f928ec6d04d in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /opt/kde4-trunk/qt/lib/libQtGui.so.4
#25 0x00007f928ec75aaa in QApplication::notify(QObject*, QEvent*) () from /opt/kde4-trunk/qt/lib/libQtGui.so.4
#26 0x00007f9290c6166e in KApplication::notify (this=0x7fff9c8b6100, receiver=0x6e9f070, event=0x7fff9c8b5dc0) at /home/kde-devel-trunk/kde/src/KDE/kdelibs/kdeui/kernel/kapplication.cpp:307
#27 0x00007f928fe762bc in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /opt/kde4-trunk/qt/lib/libQtCore.so.4
#28 0x00007f928fe9eec6 in ?? () from /opt/kde4-trunk/qt/lib/libQtCore.so.4
#29 0x00007f928fe9b98d in ?? () from /opt/kde4-trunk/qt/lib/libQtCore.so.4
#30 0x00007f9289e430fb in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#31 0x00007f9289e468cd in ?? () from /usr/lib64/libglib-2.0.so.0
#32 0x00007f9289e46a8b in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#33 0x00007f928fe9b8ef in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /opt/kde4-trunk/qt/lib/libQtCore.so.4
#34 0x00007f928ecf3c7f in ?? () from /opt/kde4-trunk/qt/lib/libQtGui.so.4
#35 0x00007f928fe74c52 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /opt/kde4-trunk/qt/lib/libQtCore.so.4
#36 0x00007f928fe74de5 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /opt/kde4-trunk/qt/lib/libQtCore.so.4
#37 0x00007f928fe76e6c in QCoreApplication::exec() () from /opt/kde4-trunk/qt/lib/libQtCore.so.4
#38 0x0000000000403e7a in main (argc=1, argv=0x7fff9c8b6618) at /home/kde-devel-trunk/kde/src/KDE/kdepim/kontact/src/main.cpp:218