Application that crashed: kmail
Version of the application: 1.12.2
KDE Version: 4.3.2 (KDE 4.3.2) "release 5"
Qt Version: 4.5.3
Operating System: Linux 2.6.27.29-0.1-pae i686

What I was doing when the application crashed:
kmail (1.12.2) fails when attempt to read an attached file wm with mplayer in kde 4.3.2 release 5

 -- Backtrace:
Application: KMail (kmail), signal: Segmentation fault
[KCrash Handler]
#6  0xb7516e81 in KMHandleAttachmentCommand::slotStart() () from /usr/lib/libkmailprivate.so.4
#7  0xb7504ea3 in KMHandleAttachmentCommand::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkmailprivate.so.4
#8  0xb680dee8 in QMetaObject::activate (sender=0x8d371f0, from_signal_index=4, to_signal_index=4, argv=0x0) at kernel/qobject.cpp:3113
#9  0xb680eb72 in QMetaObject::activate (sender=0x8d371f0, m=0xb68ee908, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3187
#10 0xb6813d17 in QSingleShotTimer::timeout (this=0x8d371f0) at .moc/release-shared/qtimer.moc:76
#11 0xb6813e3c in QSingleShotTimer::timerEvent (this=0x8d371f0) at kernel/qtimer.cpp:298
#12 0xb6808e8f in QObject::event (this=0x8d371f0, e=0xbfd24310) at kernel/qobject.cpp:1075
#13 0xb5ccf76c in QApplicationPrivate::notify_helper (this=0x8078a20, receiver=0x8d371f0, e=0xbfd24310) at kernel/qapplication.cpp:4065
#14 0xb5cd7a5e in QApplication::notify (this=0xbfd24658, receiver=0x8d371f0, e=0xbfd24310) at kernel/qapplication.cpp:3605
#15 0xb7d7637d in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#16 0xb67f88fb in QCoreApplication::notifyInternal (this=0xbfd24658, receiver=0x8d371f0, event=0xbfd24310) at kernel/qcoreapplication.cpp:610
#17 0xb6828066 in QTimerInfoList::activateTimers (this=0x807c77c) at kernel/qcoreapplication.h:213
#18 0xb6824347 in idleTimerSourceDispatch (source=0x807c7b8) at kernel/qeventdispatcher_glib.cpp:184
#19 0xb3fcd9c8 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#20 0xb3fd1083 in ?? () from /usr/lib/libglib-2.0.so.0
#21 0xb3fd1241 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#22 0xb6824071 in QEventDispatcherGlib::processEvents (this=0x8053380, flags={i = -1076738888}) at kernel/qeventdispatcher_glib.cpp:407
#23 0xb5d6fcc5 in QGuiEventDispatcherGlib::processEvents (this=0x8053380, flags={i = -1076738840}) at kernel/qguieventdispatcher_glib.cpp:202
#24 0xb67f6f1a in QEventLoop::processEvents (this=0xbfd24560, flags={i = -1076738776}) at kernel/qeventloop.cpp:149
#25 0xb67f7362 in QEventLoop::exec (this=0xbfd24560, flags={i = -1076738712}) at kernel/qeventloop.cpp:201
#26 0xb67f9809 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#27 0xb5ccf5e7 in QApplication::exec () at kernel/qapplication.cpp:3525
#28 0x0804a820 in _start ()

Reported using DrKonqi