Version:            (using KDE KDE 3.4.2)
Installed from:    Compiled From Sources
Compiler:          gcc 4.0.1 
OS:                Linux

I clicked Send Now after composing a message and immediately after that, kmail crashed:

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Using host libthread_db library "/lib/tls/libthread_db.so.1".
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`system-supplied DSO at 0xffffe000' has disappeared; keeping its symbols.
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[Thread debugging using libthread_db enabled]
[New Thread 1113469792 (LWP 4332)]
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[KCrash handler]
#2  0x40166b5a in KMMessage::asDwString ()
   from /opt/kde3.4/lib/libkmailprivate.so
#3  0x40168ab8 in KMMessage::asString ()
   from /opt/kde3.4/lib/libkmailprivate.so
#4  0x4022a86b in KMComposeWin::autoSaveMessage ()
   from /opt/kde3.4/lib/libkmailprivate.so
#5  0x40237c25 in KMComposeWin::qt_invoke ()
   from /opt/kde3.4/lib/libkmailprivate.so
#6  0x41bb27a9 in QObject::activate_signal ()
   from /opt/qt-3.3.4/lib/libqt-mt.so.3
#7  0x41bb2c44 in QObject::activate_signal ()
   from /opt/qt-3.3.4/lib/libqt-mt.so.3
#8  0x41ee4d29 in QTimer::timeout () from /opt/qt-3.3.4/lib/libqt-mt.so.3
#9  0x41bd605e in QTimer::event () from /opt/qt-3.3.4/lib/libqt-mt.so.3
#10 0x41b5506a in QApplication::internalNotify ()
   from /opt/qt-3.3.4/lib/libqt-mt.so.3
#11 0x41b559ff in QApplication::notify () from /opt/qt-3.3.4/lib/libqt-mt.so.3
#12 0x417d9e92 in KApplication::notify () from /opt/kde3.4/lib/libkdecore.so.4
#13 0x41b49ded in QEventLoop::activateTimers ()
   from /opt/qt-3.3.4/lib/libqt-mt.so.3
#14 0x41b052ae in QEventLoop::processEvents ()
   from /opt/qt-3.3.4/lib/libqt-mt.so.3
#15 0x41b6b4d4 in QEventLoop::enterLoop ()
   from /opt/qt-3.3.4/lib/libqt-mt.so.3
#16 0x41b6b3f6 in QEventLoop::exec () from /opt/qt-3.3.4/lib/libqt-mt.so.3
#17 0x41b54a7f in QApplication::exec () from /opt/qt-3.3.4/lib/libqt-mt.so.3
#18 0x0804a712 in ?? ()
#19 0xbffff878 in ?? ()
#20 0xbffffa64 in ?? ()
#21 0x00000000 in ?? ()
#22 0x00000000 in ?? ()
#23 0x00000004 in ?? ()
#24 0x00000010 in ?? ()
#25 0x40044e44 in ?? () from /opt/kde3.4/lib/libkmailprivate.so
#26 0x4188e134 in kde_malloc_is_used () from /opt/kde3.4/lib/libkdecore.so.4
#27 0x40065fff in ?? () from /opt/kde3.4/lib/libkmailprivate.so
#28 0x40068f52 in ?? () from /opt/kde3.4/lib/libkmailprivate.so
#29 0x00000044 in ?? ()
#30 0x41968d28 in ?? () from /opt/qt-3.3.4/lib/libqt-mt.so.3
#31 0x419b7d28 in ?? () from /opt/qt-3.3.4/lib/libqt-mt.so.3
#32 0x41a5b7f6 in ?? () from /opt/qt-3.3.4/lib/libqt-mt.so.3
#33 0x0804aa88 in vtable for QGList ()
#34 0x4188e560 in kde_malloc_is_used () from /opt/kde3.4/lib/libkdecore.so.4
#35 0x0806a100 in ?? ()
#36 0x00000000 in ?? ()
#37 0x0807e2a8 in ?? ()
#38 0x080e0990 in ?? ()
#39 0x080e0320 in ?? ()
#40 0x080f7fc8 in ?? ()
#41 0x00000000 in ?? ()
#42 0x00000000 in ?? ()
#43 0x00000001 in ?? ()
#44 0x080613c8 in ?? ()
#45 0x40007800 in _dl_rtld_di_serinfo () from /lib/ld-linux.so.2
#46 0x423c8ec0 in __libc_start_main () from /lib/tls/libc.so.6
#47 0x00000003 in ?? ()
#48 0xbffffaf4 in ?? ()
#49 0xbffffb04 in ?? ()
#50 0x00000001 in ?? ()
#51 0x424e6ff4 in ?? () from /lib/tls/libc.so.6
#52 0x00000000 in ?? ()
#53 0x40015cc0 in ?? () from /lib/ld-linux.so.2
#54 0xbffffac8 in ?? ()
#55 0xbffffa80 in ?? ()
#56 0x423c8e85 in __libc_start_main () from /lib/tls/libc.so.6
#57 0x00000000 in ?? ()
#58 0x00000000 in ?? ()
#59 0x00000000 in ?? ()
#60 0x4000aaa0 in _dl_rtld_di_serinfo () from /lib/ld-linux.so.2
#61 0x0804a3c1 in ?? ()
#62 0x0804a5b0 in ?? ()
#63 0x00000003 in ?? ()
#64 0xbffffaf4 in ?? ()
#65 0x0804a8e0 in endl ()