Application that crashed: kontact
Version of the application: 4.3.2
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-20-generic i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
1 - might be helpful.  System rebootd overnite, I don't know why
2 - read some emails, marked some unread, moved to another email folder to read and then crashed

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#6  0x083ed33d in ?? ()
#7  0xb4459b02 in ?? () from /usr/lib/libkmailprivate.so.4
#8  0xb442456d in ?? () from /usr/lib/libkmailprivate.so.4
#9  0xb460ba6e in KMSetStatusCommand::execute() () from /usr/lib/libkmailprivate.so.4
#10 0xb4604ba2 in KMCommand::slotPostTransfer(KMCommand::Result) () from /usr/lib/libkmailprivate.so.4
#11 0xb460f15f in KMCommand::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkmailprivate.so.4
#12 0xb460f4e2 in KMSetStatusCommand::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkmailprivate.so.4
#13 0x04af9263 in QMetaObject::activate (sender=0x9220c10, from_signal_index=4, to_signal_index=4, argv=0xbfe20628) at kernel/qobject.cpp:3113
#14 0x04af9ec2 in QMetaObject::activate (sender=0x9220c10, m=0xb4a3d634, local_signal_index=0, argv=0xbfe20628) at kernel/qobject.cpp:3187
#15 0xb4600bd3 in KMCommand::messagesTransfered(KMCommand::Result) () from /usr/lib/libkmailprivate.so.4
#16 0xb461e156 in KMCommand::transferSelectedMsgs() () from /usr/lib/libkmailprivate.so.4
#17 0xb461e3a2 in KMCommand::slotStart() () from /usr/lib/libkmailprivate.so.4
#18 0xb460f13b in KMCommand::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkmailprivate.so.4
#19 0xb460f4e2 in KMSetStatusCommand::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkmailprivate.so.4
#20 0x04af9263 in QMetaObject::activate (sender=0x9598640, from_signal_index=4, to_signal_index=4, argv=0x0) at kernel/qobject.cpp:3113
#21 0x04af9ec2 in QMetaObject::activate (sender=0x9598640, m=0x4bd3908, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3187
#22 0x04afe387 in QSingleShotTimer::timeout (this=0x9598640) at .moc/release-shared/qtimer.moc:76
#23 0x04afe49c in QSingleShotTimer::timerEvent (this=0x9598640) at kernel/qtimer.cpp:298
#24 0x04af33bf in QObject::event (this=0x9598640, e=0xbfe20ca0) at kernel/qobject.cpp:1075
#25 0x00e30f54 in QApplicationPrivate::notify_helper (this=0x834bf80, receiver=0x9598640, e=0xbfe20ca0) at kernel/qapplication.cpp:4056
#26 0x00e3867c in QApplication::notify (this=0xbfe21004, receiver=0x9598640, e=0xbfe20ca0) at kernel/qapplication.cpp:3603
#27 0x00b50bfa in KApplication::notify (this=0xbfe21004, receiver=0x9598640, event=0xbfe20ca0) at ../../kdeui/kernel/kapplication.cpp:302
#28 0x04ae36cb in QCoreApplication::notifyInternal (this=0xbfe21004, receiver=0x9598640, event=0xbfe20ca0) at kernel/qcoreapplication.cpp:610
#29 0x04b107ce in QCoreApplication::sendEvent (this=0x8350194) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#30 QTimerInfoList::activateTimers (this=0x8350194) at kernel/qeventdispatcher_unix.cpp:572
#31 0x04b0e0e0 in timerSourceDispatch (source=0x8350160) at kernel/qeventdispatcher_glib.cpp:165
#32 0x05efde88 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#33 0x05f01730 in ?? () from /lib/libglib-2.0.so.0
#34 0x05f01863 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#35 0x04b0e02c in QEventDispatcherGlib::processEvents (this=0x83269f8, flags=...) at kernel/qeventdispatcher_glib.cpp:327
#36 0x00ed1be5 in QGuiEventDispatcherGlib::processEvents (this=0x83269f8, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#37 0x04ae1c79 in QEventLoop::processEvents (this=0xbfe20f64, flags=) at kernel/qeventloop.cpp:149
#38 0x04ae20ca in QEventLoop::exec (this=0xbfe20f64, flags=...) at kernel/qeventloop.cpp:201
#39 0x04ae453f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#40 0x00e30dd7 in QApplication::exec () at kernel/qapplication.cpp:3525
#41 0x0804b4e6 in _start ()

Reported using DrKonqi