Version:            (using KDE KDE 3.4.90)
Installed from:    Gentoo Packages

Kmail 1.8.91 on KDE 3.4.91

I'm writing a message. I attach a file. I press "compress" (neat feature!) and Kmail crashes. This is completely reproducible on my machine.

Backtrace:

Using host libthread_db library "/lib/libthread_db.so.1".
`system-supplied DSO at 0xffffe000' has disappeared; keeping its symbols.
[Thread debugging using libthread_db enabled]
[New Thread -1241277728 (LWP 1222)]
[KCrash handler]
#4  0xffffe410 in __kernel_vsyscall ()
#5  0x4a843651 in raise () from /lib/libc.so.6
#6  0x4a84515c in abort () from /lib/libc.so.6
#7  0x4a83cd09 in __assert_fail () from /lib/libc.so.6
#8  0xb566e862 in KMMessagePart::bodyDecodedBinary (this=0xb58bff40)
    at kmmsgpart.cpp:297
#9  0xb564106f in KMComposeWin::compressAttach (this=0x86e1ad0, idx=142895856)
    at kmcomposewin.cpp:2978
#10 0xb562f023 in KMComposeWin::qt_invoke (this=0x86e1ad0, _id=-1080106364, 
    _o=0xbf9ee270) at kmcomposewin.moc:480
#11 0xb650d9b0 in QObject::activate_signal (this=0x888c338, clist=0x8885d78, 
    o=0xbf9ee270) at qobject.cpp:2355
#12 0xb650dd6a in QObject::activate_signal (this=0x888c338, signal=2, param=0)
    at qobject.cpp:2448
#13 0xb5787ed7 in KMAtmListViewItem::compress (this=0x0, t0=6)
    at kmatmlistview.moc:96
#14 0xb5787d10 in KMAtmListViewItem::slotCompress (this=0x888c338)
    at kmatmlistview.cpp:281
#15 0xb5787f88 in KMAtmListViewItem::qt_invoke (this=0x888c338, _id=2, _o=0x0)
    at kmatmlistview.moc:108
#16 0xb650d9b0 in QObject::activate_signal (this=0x88869a0, clist=0x8886eb0, 
    o=0xbf9ee3b0) at qobject.cpp:2355
#17 0xb650d808 in QObject::activate_signal (this=0x88869a0, signal=4)
    at qobject.cpp:2324
#18 0xb68f9a8b in QButton::clicked (this=0x88869a0) at moc_qbutton.cpp:152
#19 0xb65bc2ca in QButton::mouseReleaseEvent (this=0x88869a0, e=0xbf9ee820)
    at qbutton.cpp:836
#20 0xb6550e39 in QWidget::event (this=0x88869a0, e=0xbf9ee820)
    at qwidget.cpp:4676
#21 0xb649d545 in QApplication::internalNotify (this=0xbf9eecd0, 
    receiver=0x88869a0, e=0xbf9ee820) at qapplication.cpp:2635
#22 0xb649ca78 in QApplication::notify (this=0xbf9eecd0, receiver=0x88869a0, 
    e=0xbf9ee820) at qapplication.cpp:2421
#23 0xb6cc0557 in KApplication::notify (this=0xbf9eecd0, receiver=0x88869a0, 
    event=0xbf9ee820) at kapplication.cpp:550
#24 0xb6423ade in QApplication::sendSpontaneousEvent (receiver=0x88869a0, 
    event=0xbf9ee820) at qapplication.h:494
#25 0xb641b820 in QETWidget::translateMouseEvent (this=0x88869a0, 
    event=0xbf9eebe0) at qapplication_x11.cpp:4291
#26 0xb64190e8 in QApplication::x11ProcessEvent (this=0xbf9eecd0, 
    event=0xbf9eebe0) at qapplication_x11.cpp:3442
#27 0xb6437065 in QEventLoop::processEvents (this=0x815c8e8, flags=4)
    at qeventloop_x11.cpp:192
#28 0xb64b4ae9 in QEventLoop::enterLoop (this=0x815c8e8) at qeventloop.cpp:198
#29 0xb64b4a02 in QEventLoop::exec (this=0x815c8e8) at qeventloop.cpp:145
#30 0xb649d6e7 in QApplication::exec (this=0xbf9eecd0)
    at qapplication.cpp:2758
#31 0x0805c96c in main (argc=0, argv=0x0) at main.cpp:177