Version:           1.9.1 (using KDE 3.5.1, Debian Package 4:3.5.1-4 (testing/unstable))
Compiler:          Target: i486-linux-gnu
OS:                Linux (i686) release 2.6.15.6-kanotix-1

This crash happend so far two times when I was fast scrolling through the folder of the de.openoffice-users-mailinglist, where on of the users is asking for email receipts and while scrolling I deny the requests.

Here are two backtraces:

Using host libthread_db library "/lib/tls/libthread_db.so.1".
[Thread debugging using libthread_db enabled]
[New Thread -1241631040 (LWP 2686)]
[New Thread -1294980176 (LWP 2786)]
[New Thread -1284035664 (LWP 2759)]
[New Thread -1275647056 (LWP 2758)]
[New Thread -1267258448 (LWP 2757)]
[New Thread -1258869840 (LWP 2756)]
[KCrash handler]
#5  0x00000000 in ?? ()
#6  0xb53d626b in KMMessage::createMDN (this=0xa75b3a8, a=3038648808, 
    d=KMime::MDN::Displayed, allowGUI=true, m=@0xbf8dbcd0)
    at /tmp/buildd/kdepim-3.5.1/build-tree/kdepim-3.5.1/kmail/kmmessage.cpp:1411
#7  0xb549d831 in KMReaderWin::slotTouchMessage (this=0x8d3c090)
    at /tmp/buildd/kdepim-3.5.1/build-tree/kdepim-3.5.1/kmail/kmreaderwin.cpp:1780
#8  0xb549f0fc in KMReaderWin::setMsg (this=0x8d3c090, aMsg=0xa75b3a8, 
    force=false)
    at /tmp/buildd/kdepim-3.5.1/build-tree/kdepim-3.5.1/kmail/kmreaderwin.cpp:1228
#9  0xb55e81a3 in KMMainWidget::slotMsgSelected (this=0x8d20b08, 
    msg=0xa75b3a8)
    at /tmp/buildd/kdepim-3.5.1/build-tree/kdepim-3.5.1/kmail/kmmainwidget.cpp:1883
#10 0xb55f6cee in KMMainWidget::qt_invoke (this=0x8d20b08, _id=55, 
    _o=0xbf8dbe14) at kmmainwidget.moc:477
#11 0xb707f7ff in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#12 0xb5449d82 in KMHeaders::selected (this=0x8d23c78, t0=0xb51e19e8)
    at kmheaders.moc:250
#13 0xb5452937 in KMHeaders::highlightMessage (this=0x8d23c78, lvi=0xa9e8898, 
    markitread=false)
    at /tmp/buildd/kdepim-3.5.1/build-tree/kdepim-3.5.1/kmail/kmheaders.cpp:2013
#14 0xb5452d5a in KMHeaders::highlightMessage (this=0xb51e19e8, i=0xb51e19e8)
    at /tmp/buildd/kdepim-3.5.1/build-tree/kdepim-3.5.1/kmail/kmheaders.cpp:2262
#15 0xb5459816 in KMHeaders::qt_invoke (this=0x8d23c78, _id=107, 
    _o=0xbf8dbf58) at kmheaders.moc:295
#16 0xb707f7ff in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#17 0xb74238f0 in QListView::currentChanged () from /usr/lib/libqt-mt.so.3
#18 0xb717ef26 in QListView::setCurrentItem () from /usr/lib/libqt-mt.so.3
#19 0xb5451a97 in KMHeaders::selectNextMessage (this=0x8d23c78)
    at /tmp/buildd/kdepim-3.5.1/build-tree/kdepim-3.5.1/kmail/kmheaders.cpp:1720
#20 0xb5451b3f in KMHeaders::nextMessage (this=0x8d23c78)
    at /tmp/buildd/kdepim-3.5.1/build-tree/kdepim-3.5.1/kmail/kmheaders.cpp:1700
#21 0xb55e0033 in KMMainWidget::slotNextMessage (this=0xb51e19e8)
    at /tmp/buildd/kdepim-3.5.1/build-tree/kdepim-3.5.1/kmail/kmmainwidget.cpp:2063
#22 0xb55f76a2 in KMMainWidget::qt_invoke (this=0x8d20b08, _id=157, 
    _o=0xbf8dc13c) at kmmainwidget.moc:579
#23 0xb707f7ff in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#24 0xb7080290 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#25 0xb6884dd9 in KAction::activated (this=0xb51e19e8) at kaction.moc:176
#26 0xb68bef91 in KAction::slotActivated (this=0x8d96220) at kaction.cpp:1102
#27 0xb68de31f in KAction::qt_invoke (this=0x8d96220, _id=15, _o=0xbf8dc24c)
    at kaction.moc:218
#28 0xb707f7ff in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#29 0xb7080290 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#30 0xb7657579 in KAccelPrivate::menuItemActivated (this=0xb51e19e8)
    at kaccelprivate.moc:110
#31 0xb7692ed7 in KAccelPrivate::emitActivatedSignal (this=0xa959598, 
    pAction=0x8e6f5f8) at kaccel.cpp:403
#32 0xb76f1fa5 in KAccelPrivate::eventFilter (this=0xa959598, 
    pEvent=0xbf8dc70c) at kaccel.cpp:373
#33 0xb707c964 in QObject::activate_filters () from /usr/lib/libqt-mt.so.3
#34 0xb707c9e2 in QObject::event () from /usr/lib/libqt-mt.so.3
#35 0xb70b9e22 in QWidget::event () from /usr/lib/libqt-mt.so.3
#36 0xb718ad24 in QMainWindow::event () from /usr/lib/libqt-mt.so.3
#37 0xb7016122 in QApplication::internalNotify () from /usr/lib/libqt-mt.so.3
#38 0xb70164ab in QApplication::notify () from /usr/lib/libqt-mt.so.3
#39 0xb7719fde in KApplication::notify (this=0xbf8dcc00, receiver=0x8d607c0, 
    event=0xbf8dc70c) at kapplication.cpp:550
#40 0xb7692c96 in KAccelEventHandler::x11Event (this=0x8130f00, 
    pEvent=0xbf8dca48) at qapplication.h:520
#41 0xb77184bf in KApplication::x11EventFilter (this=0xbf8dcc00, 
    _event=0xbf8dca48) at kapplication.cpp:1652
#42 0xb6f93c83 in qt_set_x11_event_filter () from /usr/lib/libqt-mt.so.3
#43 0xb6fa0eef in QApplication::x11ProcessEvent () from /usr/lib/libqt-mt.so.3
#44 0xb6fbaade in QEventLoop::processEvents () from /usr/lib/libqt-mt.so.3
#45 0xb702eb01 in QEventLoop::enterLoop () from /usr/lib/libqt-mt.so.3
#46 0xb702ea26 in QEventLoop::exec () from /usr/lib/libqt-mt.so.3
#47 0xb7014c35 in QApplication::exec () from /usr/lib/libqt-mt.so.3
#48 0x0805ae7b in main (argc=-1256318488, argv=0xb51e19e8) at main.cpp:177
#49 0xb77df001 in __libc_start_main () from /lib/tls/libc.so.6
#50 0x08058561 in _start () at ../sysdeps/i386/elf/start.S:119

and the second:


Using host libthread_db library "/lib/tls/libthread_db.so.1".
[Thread debugging using libthread_db enabled]
[New Thread -1249388000 (LWP 13883)]
[New Thread -1281127504 (LWP 13951)]
[New Thread -1272738896 (LWP 13950)]
[New Thread -1264350288 (LWP 13949)]
[New Thread -1255961680 (LWP 13948)]
[KCrash handler]
#5  0x00000000 in ?? ()
#6  0xb7b8bdfb in KMMessage::createMDN (this=0x883a588, a=3061098984, 
    d=KMime::MDN::Displayed, allowGUI=true, m=@0xbf83fb80)
    at /tmp/buildd/kdepim-3.5.1/build-tree/kdepim-3.5.1/kmail/kmmessage.cpp:1411
#7  0xb7c52c51 in KMReaderWin::slotTouchMessage (this=0x873c948)
    at /tmp/buildd/kdepim-3.5.1/build-tree/kdepim-3.5.1/kmail/kmreaderwin.cpp:1774
#8  0xb7c544fc in KMReaderWin::setMsg (this=0x873c948, aMsg=0x883a588, 
    force=false)
    at /tmp/buildd/kdepim-3.5.1/build-tree/kdepim-3.5.1/kmail/kmreaderwin.cpp:1222
#9  0xb7d9c033 in KMMainWidget::slotMsgSelected (this=0x805f240, 
    msg=0x883a588)
    at /tmp/buildd/kdepim-3.5.1/build-tree/kdepim-3.5.1/kmail/kmmainwidget.cpp:1869
#10 0xb7dabdde in KMMainWidget::qt_invoke (this=0x805f240, _id=55, 
    _o=0xbf83fcc4) at kmmainwidget.moc:472
#11 0xb70897ff in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#12 0xb7bff7f2 in KMHeaders::selected (this=0x87124d8, t0=0xb674a9e8)
    at kmheaders.moc:250
#13 0xb7c08317 in KMHeaders::highlightMessage (this=0x87124d8, lvi=0x9b9a258, 
    markitread=false)
    at /tmp/buildd/kdepim-3.5.1/build-tree/kdepim-3.5.1/kmail/kmheaders.cpp:1998
#14 0xb7c0873a in KMHeaders::highlightMessage (this=0xb674a9e8, i=0xb674a9e8)
    at /tmp/buildd/kdepim-3.5.1/build-tree/kdepim-3.5.1/kmail/kmheaders.cpp:2247
#15 0xb7c0f1f6 in KMHeaders::qt_invoke (this=0x87124d8, _id=107, 
    _o=0xbf83fe08) at kmheaders.moc:295
#16 0xb70897ff in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#17 0xb742d8f0 in QListView::currentChanged () from /usr/lib/libqt-mt.so.3
#18 0xb7188f26 in QListView::setCurrentItem () from /usr/lib/libqt-mt.so.3
#19 0xb7c07477 in KMHeaders::selectNextMessage (this=0x87124d8)
    at /tmp/buildd/kdepim-3.5.1/build-tree/kdepim-3.5.1/kmail/kmheaders.cpp:1705
#20 0xb7c0751f in KMHeaders::nextMessage (this=0x87124d8)
    at /tmp/buildd/kdepim-3.5.1/build-tree/kdepim-3.5.1/kmail/kmheaders.cpp:1685
#21 0xb7d95073 in KMMainWidget::slotNextMessage (this=0xb674a9e8)
    at /tmp/buildd/kdepim-3.5.1/build-tree/kdepim-3.5.1/kmail/kmmainwidget.cpp:2049
#22 0xb7dac772 in KMMainWidget::qt_invoke (this=0x805f240, _id=156, 
    _o=0xbf83ffec) at kmmainwidget.moc:573
#23 0xb70897ff in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#24 0xb708a290 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#25 0xb5e2cdd9 in KAction::activated (this=0xb674a9e8) at kaction.moc:176
#26 0xb5e66f91 in KAction::slotActivated (this=0x87c8f78) at kaction.cpp:1102
#27 0xb5e8631f in KAction::qt_invoke (this=0x87c8f78, _id=15, _o=0xbf8400fc)
    at kaction.moc:218
#28 0xb70897ff in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#29 0xb708a290 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#30 0xb7661579 in KAccelPrivate::menuItemActivated (this=0xb674a9e8)
    at kaccelprivate.moc:110
#31 0xb769ced7 in KAccelPrivate::emitActivatedSignal (this=0x885d168, 
    pAction=0x888ee48) at kaccel.cpp:403
#32 0xb76fbf85 in KAccelPrivate::eventFilter (this=0x885d168, 
    pEvent=0xbf8405bc) at kaccel.cpp:373
#33 0xb7086964 in QObject::activate_filters () from /usr/lib/libqt-mt.so.3
#34 0xb70869e2 in QObject::event () from /usr/lib/libqt-mt.so.3
#35 0xb70c3e22 in QWidget::event () from /usr/lib/libqt-mt.so.3
#36 0xb7194d24 in QMainWindow::event () from /usr/lib/libqt-mt.so.3
#37 0xb7020122 in QApplication::internalNotify () from /usr/lib/libqt-mt.so.3
#38 0xb70204ab in QApplication::notify () from /usr/lib/libqt-mt.so.3
#39 0xb7723fbe in KApplication::notify (this=0xbf840a98, receiver=0x878a6b8, 
    event=0xbf8405bc) at kapplication.cpp:550
#40 0xb769cc96 in KAccelEventHandler::x11Event (this=0x85f7608, 
    pEvent=0xbf8408f8) at qapplication.h:520
#41 0xb772249f in KApplication::x11EventFilter (this=0xbf840a98, 
    _event=0xbf8408f8) at kapplication.cpp:1652
#42 0xb6f9dc83 in qt_set_x11_event_filter () from /usr/lib/libqt-mt.so.3
#43 0xb6faaeef in QApplication::x11ProcessEvent () from /usr/lib/libqt-mt.so.3
#44 0xb6fc4ade in QEventLoop::processEvents () from /usr/lib/libqt-mt.so.3
#45 0xb7038b01 in QEventLoop::enterLoop () from /usr/lib/libqt-mt.so.3
#46 0xb7038a26 in QEventLoop::exec () from /usr/lib/libqt-mt.so.3
#47 0xb701ec35 in QApplication::exec () from /usr/lib/libqt-mt.so.3
#48 0x0804a098 in main (argc=-1233868312, argv=0xb674a9e8)
    at /tmp/buildd/kdepim-3.5.1/build-tree/kdepim-3.5.1/kmail/main.cpp:110
#49 0xb77e9001 in __libc_start_main () from /lib/tls/libc.so.6
#50 0x08049e11 in _start () at ../sysdeps/i386/elf/start.S:119