Application that crashed: kontact
Version of the application: 4.3.3
KDE Version: 4.3.3 (KDE 4.3.3)
Qt Version: 4.5.3
Operating System: Linux 2.6.31.5-127.fc12.i686.PAE i686
Distribution: "Fedora release 12 (Constantine)"

What I was doing when the application crashed:
While an (Disconnected IMAP) account is begin syncronized with the server, the account was removed.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#6  0x00000000 in ?? ()
#7  0x02b669d6 in ?? () from /usr/lib/libkio.so.5
#8  0x02b62efe in ?? () from /usr/lib/libkio.so.5
#9  0x02a9345c in ?? () from /usr/lib/libkio.so.5
#10 0x008f708f in exit () from /lib/libc.so.6
#11 0xb46dc4b6 in KMKernel::emergencyExit(QString const&) () from /usr/lib/libkmailprivate.so.4
#12 0xb46bec9d in ?? () from /usr/lib/libkmailprivate.so.4
#13 0xb46bfa9c in ?? () from /usr/lib/libkmailprivate.so.4
#14 0xb46b2163 in ?? () from /usr/lib/libkmailprivate.so.4
#15 0xb47e3da5 in ?? () from /usr/lib/libkmailprivate.so.4
#16 0xb47e2c7f in ?? () from /usr/lib/libkmailprivate.so.4
#17 0x07633c0c in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#18 0x07634843 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#19 0x077f9c64 in KJob::result(KJob*) () from /usr/lib/libkdecore.so.5
#20 0x077fa11a in KJob::emitResult() () from /usr/lib/libkdecore.so.5
#21 0x02aaaff3 in KIO::SimpleJob::slotFinished() () from /usr/lib/libkio.so.5
#22 0x02aab51b in KIO::TransferJob::slotFinished() () from /usr/lib/libkio.so.5
#23 0x02aa9203 in KIO::TransferJob::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkio.so.5
#24 0x07633c0c in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#25 0x07634843 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#26 0x02b77f98 in KIO::SlaveInterface::finished() () from /usr/lib/libkio.so.5
#27 0x02b7bedd in KIO::SlaveInterface::dispatch(int, QByteArray const&) () from /usr/lib/libkio.so.5
#28 0x02b78484 in KIO::SlaveInterface::dispatch() () from /usr/lib/libkio.so.5
#29 0x02b6a3db in KIO::Slave::gotInput() () from /usr/lib/libkio.so.5
#30 0x02b6c803 in KIO::Slave::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkio.so.5
#31 0x07633c0c in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#32 0x07634843 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#33 0x02a70f78 in KIO::Connection::readyRead() () from /usr/lib/libkio.so.5
#34 0x02a72d9e in ?? () from /usr/lib/libkio.so.5
#35 0x02a72ec6 in KIO::Connection::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkio.so.5
#36 0x0762c7fc in QMetaCallEvent::placeMetaCall(QObject*) () from /usr/lib/libQtCore.so.4
#37 0x0762df96 in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#38 0x02127b24 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#39 0x0212f281 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#40 0x07b8202b in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#41 0x0761dd73 in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#42 0x0761e972 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/libQtCore.so.4
#43 0x0761eb2e in QCoreApplication::sendPostedEvents(QObject*, int) () from /usr/lib/libQtCore.so.4
#44 0x07648f40 in ?? () from /usr/lib/libQtCore.so.4
#45 0x06bad118 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#46 0x06bb0a48 in ?? () from /lib/libglib-2.0.so.0
#47 0x06bb0b74 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#48 0x07648b6d in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#49 0x021c7356 in ?? () from /usr/lib/libQtGui.so.4
#50 0x0761c2aa in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#51 0x0761c70a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#52 0x0761ebf7 in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#53 0x021279a8 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#54 0x0804b321 in _start ()

Reported using DrKonqi