Version:           unknown (using KDE 3.5.4, PLD Linux Distribution)
Compiler:          gcc version 3.3.6 (PLD Linux)
OS:                Linux (i686) release 2.6.17

I just tried to close KMail.

Using host libthread_db library "/lib/tls/libthread_db.so.1".
[KCrash handler]
#6  0x2d656761 in ?? ()
#7  0xb7ddba39 in KMail::ImapJob::slotGetNextMessage (this=0x878ed00)
    at imapjob.cpp:279
#8  0xb7ddae9f in KMail::ImapJob::init (this=0x878ed00, jt=tGetMessage, sets=
      {static null = {static null = <same as static member of an already seen type>, d = 0x804ef98, static shared_null = 0x804ef98}, d = 0x84d4db0, static shared_null = 0x804ef98}, folder=0x0, msgList=@0x878ed28) at imapjob.cpp:216
#9  0xb7ddd466 in KMail::ImapJob::execute (this=0x878ed00) at imapjob.cpp:646
#10 0xb7dd2b02 in KMail::FolderJob::start (this=0x878ed00)
    at folderjob.cpp:109
#11 0xb7db9680 in KMMainWidget::slotMsgSelected (this=0x82ec6b8, 
    msg=0x85b4588) at kmmainwidget.cpp:1893
#12 0xb7dafbe5 in KMMainWidget::qt_invoke (this=0x82ec6b8, _id=54, 
    _o=0xbf854f60) at kmmainwidget.moc:479
#13 0xb5c9eb93 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#14 0xb7c2ce05 in KMHeaders::selected (this=0x82f91b0, t0=0x85b4588)
    at kmheaders.moc:250
#15 0xb7c26801 in KMHeaders::highlightMessage (this=0x82f91b0, lvi=0x86c76e8, 
    markitread=false) at kmheaders.cpp:2020
#16 0xb7c27662 in KMHeaders::highlightMessage (this=0x82f91b0, i=0x86c76e8)
    at kmheaders.cpp:2269
#17 0xb7c2d127 in KMHeaders::qt_invoke (this=0x82f91b0, _id=106, 
    _o=0xbf8550d0) at kmheaders.moc:295
#18 0xb5c9eb93 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#19 0xb5fbc15b in QListView::currentChanged () from /usr/lib/libqt-mt.so.3
#20 0xb5d85ff3 in QListView::setCurrentItem () from /usr/lib/libqt-mt.so.3
#21 0xb5d81e0c in QListView::contentsMousePressEventEx ()
   from /usr/lib/libqt-mt.so.3
#22 0xb5d81a36 in QListView::contentsMousePressEvent ()
   from /usr/lib/libqt-mt.so.3
#23 0xb65e4975 in KListView::contentsMousePressEvent (this=0x82f91b0, 
    e=0xbf8553e0) at klistview.cpp:805
#24 0xb7c26efc in KMHeaders::contentsMousePressEvent (this=0x82f91b0, 
    e=0xbf8553e0) at kmheaders.cpp:2181
#25 0xb5db3362 in QScrollView::viewportMousePressEvent ()
   from /usr/lib/libqt-mt.so.3
#26 0xb5db2ce4 in QScrollView::eventFilter () from /usr/lib/libqt-mt.so.3
#27 0xb5d81538 in QListView::eventFilter () from /usr/lib/libqt-mt.so.3
#28 0xb7c1e96a in KMHeaders::eventFilter (this=0x82f91b0, o=0x82f9c30, 
    e=0xbf8559e0) at kmheaders.cpp:241
#29 0xb5c9c54e in QObject::activate_filters () from /usr/lib/libqt-mt.so.3
#30 0xb5c9c476 in QObject::event () from /usr/lib/libqt-mt.so.3
#31 0xb5cd412f in QWidget::event () from /usr/lib/libqt-mt.so.3
#32 0xb5c4387c in QApplication::internalNotify () from /usr/lib/libqt-mt.so.3
#33 0xb5c42f9d in QApplication::notify () from /usr/lib/libqt-mt.so.3
#34 0xb62986be in KApplication::notify (this=0xbf856020, receiver=0x82f9c30, 
    event=0xbf8559e0) at kapplication.cpp:550
#35 0xb5bd924c in QETWidget::translateMouseEvent ()
   from /usr/lib/libqt-mt.so.3
#36 0xb5bd6e45 in QApplication::x11ProcessEvent () from /usr/lib/libqt-mt.so.3
#37 0xb5bee2b5 in QEventLoop::processEvents () from /usr/lib/libqt-mt.so.3
#38 0xb5c54b58 in QEventLoop::enterLoop () from /usr/lib/libqt-mt.so.3
#39 0xb5c54a08 in QEventLoop::exec () from /usr/lib/libqt-mt.so.3
#40 0xb5c43ab1 in QApplication::exec () from /usr/lib/libqt-mt.so.3
#41 0x0804aa38 in main (argc=7, argv=0xbf8561d4) at main.cpp:110