Application that crashed: kontact
Version of the application: 4.3.1
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.3
Operating System: Linux 2.6.30-2-amd64 x86_64
Distribution: Debian GNU/Linux testing (squeeze)

What I was doing when the application crashed:
Saving an encrypted MS .doc document causes kmail to crash.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#5  QBasicAtomicInt::deref (this=0x3091870, other=...) at ../../include/QtCore/../../src/corelib/arch/qatomic_x86_64.h:133
#6  QByteArray::operator= (this=0x3091870, other=...) at tools/qbytearray.cpp:850
#7  0x00007f4f95bb44fa in ?? () from /usr/lib/libkmailprivate.so.4
#8  0x00007f4f95aa693a in ?? () from /usr/lib/libkmailprivate.so.4
#9  0x00007f4f95d41c49 in KMSaveAttachmentsCommand::saveItem(partNode*, KUrl const&) () from /usr/lib/libkmailprivate.so.4
#10 0x00007f4f95d43642 in KMSaveAttachmentsCommand::slotSaveAll() () from /usr/lib/libkmailprivate.so.4
#11 0x00007f4f95d45915 in KMSaveAttachmentsCommand::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkmailprivate.so.4
#12 0x00007f4fabeafdf2 in QMetaObject::activate (sender=0x2eb1330, from_signal_index=<value optimized out>, to_signal_index=13, argv=0x2e47001) at kernel/qobject.cpp:3112
#13 0x00007f4f95d2c169 in KMLoadPartsCommand::execute() () from /usr/lib/libkmailprivate.so.4
#14 0x00007f4f95d4612c in KMLoadPartsCommand::slotStart() () from /usr/lib/libkmailprivate.so.4
#15 0x00007f4f95d37faa in KMCommand::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkmailprivate.so.4
#16 0x00007f4f95d38156 in KMLoadPartsCommand::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkmailprivate.so.4
#17 0x00007f4fabeafdf2 in QMetaObject::activate (sender=0x332bf80, from_signal_index=<value optimized out>, to_signal_index=4, argv=0x2e47001) at kernel/qobject.cpp:3112
#18 0x00007f4fabeb4f5f in QSingleShotTimer::timerEvent (this=0x332bf80) at kernel/qtimer.cpp:298
#19 0x00007f4fabeaa353 in QObject::event (this=0x332bf80, e=0x7fff8636ad60) at kernel/qobject.cpp:1074
#20 0x00007f4fab31401d in QApplicationPrivate::notify_helper (this=0x1c69d50, receiver=0x332bf80, e=0x7fff8636c7c0) at kernel/qapplication.cpp:4065
#21 0x00007f4fab31c07a in QApplication::notify (this=0x7fff8636cc10, receiver=0x332bf80, e=0x7fff8636c7c0) at kernel/qapplication.cpp:4030
#22 0x00007f4fac83a0db in KApplication::notify (this=0x7fff8636cc10, receiver=0x332bf80, event=0x7fff8636c7c0) at ../../kdeui/kernel/kapplication.cpp:302
#23 0x00007f4fabe9ac9c in QCoreApplication::notifyInternal (this=0x7fff8636cc10, receiver=0x332bf80, event=0x7fff8636c7c0) at kernel/qcoreapplication.cpp:610
#24 0x00007f4fabec72c6 in QCoreApplication::sendEvent (this=0x1c57060) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#25 QTimerInfoList::activateTimers (this=0x1c57060) at kernel/qeventdispatcher_unix.cpp:580
#26 0x00007f4fabec3658 in timerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#27 idleTimerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:231
#28 0x00007f4fa4fca12a in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#29 0x00007f4fa4fcd988 in ?? () from /lib/libglib-2.0.so.0
#30 0x00007f4fa4fcdb3c in g_main_context_iteration () from /lib/libglib-2.0.so.0
#31 0x00007f4fabec339c in QEventDispatcherGlib::processEvents (this=0x1c2cf70, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:407
#32 0x00007f4fab3aaf1f in QGuiEventDispatcherGlib::processEvents (this=0x3091870, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#33 0x00007f4fabe99562 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#34 0x00007f4fabe99934 in QEventLoop::exec (this=0x7fff8636ca70, flags=...) at kernel/qeventloop.cpp:201
#35 0x00007f4fabe9bba4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#36 0x0000000000404751 in _start ()

Reported using DrKonqi