Application that crashed: kontact
Version of the application: 4.3.4
KDE Version: 4.3.4 (KDE 4.3.4)
Qt Version: 4.5.3
Operating System: Linux 2.6.30.10-105.2.4.fc11.i586 i686

What I was doing when the application crashed:
I had already previously opened the message and its attachment earlier in the day.  When I went to do so again, I didn't leave much time between opening the email and opening its attachment, so it may not have had time to load fully.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#6  0x00c10fdb in strlen () from /lib/libc.so.6
#7  0x02f47968 in DwString::DwString (this=0xbfae2b60, aCstr=0x958bffff <Address 0x958bffff out of bounds>) at /usr/src/debug/kdepim-4.3.4/mimelib/dwstring.cpp:402
#8  0xb468aa02 in KMMessagePart::contentTransferEncoding (this=0xb050534) at /usr/src/debug/kdepim-4.3.4/kmail/kmmsgpart.cpp:392
#9  0xb468ca0d in KMMessagePart::cte (this=<value optimized out>) at /usr/src/debug/kdepim-4.3.4/kmail/kmmsgpart.h:157
#10 KMMessagePart::bodyDecodedBinary (this=<value optimized out>) at /usr/src/debug/kdepim-4.3.4/kmail/kmmsgpart.cpp:255
#11 0xb4842f3f in KMHandleAttachmentCommand::createAtmFileLink (this=0xb607720) at /usr/src/debug/kdepim-4.3.4/kmail/kmcommands.cpp:2977
#12 0xb4845164 in KMHandleAttachmentCommand::atmOpen (this=0xb607720) at /usr/src/debug/kdepim-4.3.4/kmail/kmcommands.cpp:3040
#13 0xb48456f0 in KMHandleAttachmentCommand::execute (this=0xb607720) at /usr/src/debug/kdepim-4.3.4/kmail/kmcommands.cpp:2941
#14 0xb4842cd0 in KMHandleAttachmentCommand::slotStart (this=0xb607720) at /usr/src/debug/kdepim-4.3.4/kmail/kmcommands.cpp:2927
#15 0xb482fb9b in KMHandleAttachmentCommand::qt_metacall (this=0xb607720, _c=QMetaObject::InvokeMetaMethod, _id=14, _a=0xbfae2e8c)
    at /usr/src/debug/kdepim-4.3.4/i586-redhat-linux-gnu/kmail/kmcommands.moc:2240
#16 0x0033fdc3 in QMetaObject::activate (sender=0xb6074f8, from_signal_index=4, to_signal_index=4, argv=0x0) at kernel/qobject.cpp:3112
#17 0x00340a22 in QMetaObject::activate (sender=0xb6074f8, m=0x41a768, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3186
#18 0x00344ed7 in QSingleShotTimer::timeout (this=0xb6074f8) at .moc/release-shared/qtimer.moc:76
#19 0x00344fec in QSingleShotTimer::timerEvent (this=0xb6074f8) at kernel/qtimer.cpp:298
#20 0x00339edf in QObject::event (this=0xb6074f8, e=0xbfae3320) at kernel/qobject.cpp:1074
#21 0x05c818b4 in QApplicationPrivate::notify_helper (this=0x9cc6920, receiver=0xb6074f8, e=0xbfae3320) at kernel/qapplication.cpp:4065
#22 0x05c89029 in QApplication::notify (this=0xbfae3684, receiver=0xb6074f8, e=0xbfae3320) at kernel/qapplication.cpp:3605
#23 0x0370081a in KApplication::notify (this=0xbfae3684, receiver=0xb6074f8, event=0xbfae3320) at /usr/src/debug/kdelibs-4.3.4/kdeui/kernel/kapplication.cpp:302
#24 0x0032a0ab in QCoreApplication::notifyInternal (this=0xbfae3684, receiver=0xb6074f8, event=0xbfae3320) at kernel/qcoreapplication.cpp:610
#25 0x0035729e in QCoreApplication::sendEvent (event=<value optimized out>, receiver=<value optimized out>) at kernel/qcoreapplication.h:213
#26 QTimerInfoList::activateTimers (event=<value optimized out>, receiver=<value optimized out>) at kernel/qeventdispatcher_unix.cpp:580
#27 0x00354c30 in timerSourceDispatch (source=0x9cbd470) at kernel/qeventdispatcher_glib.cpp:165
#28 0x01023308 in g_main_dispatch (context=<value optimized out>) at gmain.c:1824
#29 IA__g_main_context_dispatch (context=<value optimized out>) at gmain.c:2377
#30 0x010269e0 in g_main_context_iterate (context=0x9cc4890, block=<value optimized out>, dispatch=1, self=0x9cc80c0) at gmain.c:2455
#31 0x01026b13 in IA__g_main_context_iteration (context=0x9cc4890, may_block=1) at gmain.c:2518
#32 0x00354b7c in QEventDispatcherGlib::processEvents (this=0x9c9cc48, flags={i = 36}) at kernel/qeventdispatcher_glib.cpp:327
#33 0x05d20c45 in QGuiEventDispatcherGlib::processEvents (this=0x9c9cc48, flags={i = 36}) at kernel/qguieventdispatcher_glib.cpp:202
#34 0x00328639 in QEventLoop::processEvents (this=0xbfae35e4, flags={i = 36}) at kernel/qeventloop.cpp:149
#35 0x00328a8a in QEventLoop::exec (this=0xbfae35e4, flags={i = 0}) at kernel/qeventloop.cpp:201
#36 0x0032af0f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#37 0x05c81737 in QApplication::exec () at kernel/qapplication.cpp:3525
#38 0x0804b2e6 in main (argc=1, argv=0xbfae38a4) at /usr/src/debug/kdepim-4.3.4/kontact/src/main.cpp:218

Reported using DrKonqi