Version:            (using KDE 4.2.2)
OS:                Linux
Installed from:    Ubuntu Packages

In browsing an imap mail directory kontact froze up and then crashed. I've not been able to reproduce it since, but I do have a backtrace:

Application: Kontact (kontact), signal SIGSEGV

Thread 1 (Thread 0xb48f1700 (LWP 26048)):
[KCrash Handler]
#6  0x0a9104af in ?? ()
#7  0xb11ce9e5 in KMFolderImap::ignoreJobsForMessage (this=0x9c26b90, msg=0xa8291f8) at /build/buildd/kdepim-4.2.2/kmail/kmfolderimap.cpp:1562
#8  0xb12f1cc6 in KMMoveCommand::execute (this=0xa69e0e0) at /build/buildd/kdepim-4.2.2/kmail/kmcommands.cpp:2086
#9  0xb12d5322 in KMCommand::slotPostTransfer (this=0xa69e0e0, result=KMCommand::OK) at /build/buildd/kdepim-4.2.2/kmail/kmcommands.cpp:276
#10 0xb12e0d74 in KMCommand::qt_metacall (this=0xa69e0e0, _c=QMetaObject::InvokeMetaMethod, _id=5, _a=0xbf8a173c) at /build/buildd/kdepim-4.2.2/obj-i486-linux-gnu/kmail/kmcommands.moc:87
#11 0xb12f3cba in KMMoveCommand::qt_metacall (this=0xa69e0e0, _c=QMetaObject::InvokeMetaMethod, _id=9, _a=0xbf8a173c) at /build/buildd/kdepim-4.2.2/obj-i486-linux-gnu/kmail/kmcommands.moc:1706
#12 0xb12f3d82 in KMDeleteMsgCommand::qt_metacall (this=0xa69e0e0, _c=QMetaObject::InvokeMetaMethod, _id=9, _a=0xbf8a173c) at /build/buildd/kdepim-4.2.2/obj-i486-linux-gnu/kmail/kmcommands.moc:1758
#13 0xb5ceaca8 in QMetaObject::activate (sender=0xa69e0e0, from_signal_index=4, to_signal_index=4, argv=0xbf8a173c) at kernel/qobject.cpp:3069
#14 0xb5ceb932 in QMetaObject::activate (sender=0xa69e0e0, m=0xb175b9b4, local_signal_index=0, argv=0xbf8a173c) at kernel/qobject.cpp:3143
#15 0xb12d1993 in KMCommand::messagesTransfered (this=0xa69e0e0, _t1=KMCommand::OK) at /build/buildd/kdepim-4.2.2/obj-i486-linux-gnu/kmail/kmcommands.moc:102
#16 0xb12f002c in KMCommand::transferSelectedMsgs (this=0xa69e0e0) at /build/buildd/kdepim-4.2.2/kmail/kmcommands.cpp:370
#17 0xb12f028f in KMCommand::slotStart (this=0xa69e0e0) at /build/buildd/kdepim-4.2.2/kmail/kmcommands.cpp:268
#18 0xb12e0d83 in KMCommand::qt_metacall (this=0xa69e0e0, _c=QMetaObject::InvokeMetaMethod, _id=4, _a=0xbf8a1938) at /build/buildd/kdepim-4.2.2/obj-i486-linux-gnu/kmail/kmcommands.moc:86
#19 0xb12f3cba in KMMoveCommand::qt_metacall (this=0xa69e0e0, _c=QMetaObject::InvokeMetaMethod, _id=8, _a=0xbf8a1938) at /build/buildd/kdepim-4.2.2/obj-i486-linux-gnu/kmail/kmcommands.moc:1706
#20 0xb12f3d82 in KMDeleteMsgCommand::qt_metacall (this=0xa69e0e0, _c=QMetaObject::InvokeMetaMethod, _id=8, _a=0xbf8a1938) at /build/buildd/kdepim-4.2.2/obj-i486-linux-gnu/kmail/kmcommands.moc:1758
#21 0xb5ceaca8 in QMetaObject::activate (sender=0xa8e96a8, from_signal_index=4, to_signal_index=4, argv=0x0) at kernel/qobject.cpp:3069
#22 0xb5ceb932 in QMetaObject::activate (sender=0xa8e96a8, m=0xb5dc6908, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3143
#23 0xb5cf00a7 in QSingleShotTimer::timeout (this=0xa8e96a8) at .moc/release-shared/qtimer.moc:76
#24 0xb5cf01cc in QSingleShotTimer::timerEvent (this=0xa8e96a8) at kernel/qtimer.cpp:298
#25 0xb5ce515f in QObject::event (this=0xa8e96a8, e=0xbf8a1dbc) at kernel/qobject.cpp:1082
#26 0xb61a5f2c in QApplicationPrivate::notify_helper (this=0x973a698, receiver=0xa8e96a8, e=0xbf8a1dbc) at kernel/qapplication.cpp:4084
#27 0xb61ae22e in QApplication::notify (this=0xbf8a2068, receiver=0xa8e96a8, e=0xbf8a1dbc) at kernel/qapplication.cpp:3631
#28 0xb6dca94d in KApplication::notify (this=0xbf8a2068, receiver=0xa8e96a8, event=0xbf8a1dbc) at /build/buildd/kde4libs-4.2.2/kdeui/kernel/kapplication.cpp:307
#29 0xb5cd4a3b in QCoreApplication::notifyInternal (this=0xbf8a2068, receiver=0xa8e96a8, event=0xbf8a1dbc) at kernel/qcoreapplication.cpp:602
#30 0xb5d03d71 in QTimerInfoList::activateTimers (this=0x973c074) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#31 0xb5d004e0 in timerSourceDispatch (source=0x973c040) at kernel/qeventdispatcher_glib.cpp:164
#32 0xb4da7b88 in IA__g_main_context_dispatch (context=0x972f508) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:1814
#33 0xb4dab0eb in g_main_context_iterate (context=0x972f508, block=1, dispatch=1, self=0x973d158) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2448
#34 0xb4dab268 in IA__g_main_context_iteration (context=0x972f508, may_block=1) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2511
#35 0xb5d00438 in QEventDispatcherGlib::processEvents (this=0x9715238, flags={i = -1081467080}) at kernel/qeventdispatcher_glib.cpp:323
#36 0xb62473f5 in QGuiEventDispatcherGlib::processEvents (this=0x9715238, flags={i = -1081467032}) at kernel/qguieventdispatcher_glib.cpp:202
#37 0xb5cd306a in QEventLoop::processEvents (this=0xbf8a1fe0, flags={i = -1081466968}) at kernel/qeventloop.cpp:149
#38 0xb5cd34aa in QEventLoop::exec (this=0xbf8a1fe0, flags={i = -1081466904}) at kernel/qeventloop.cpp:200
#39 0xb5cd5959 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:880
#40 0xb61a5da7 in QApplication::exec () at kernel/qapplication.cpp:3553
#41 0x0804c072 in main (argc=1, argv=0xbf8a2364) at /build/buildd/kdepim-4.2.2/kontact/src/main.cpp:218