Version:            (using KDE KDE 3.5.5)
Installed from:    Debian stable Packages

Reported in Debian BTS at http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=413085

segfaulted regulary when jumping to new message while kmail is checking for new messages in IMAP
This crash reproduced ~2-3 times per day. Please see backtrace:

(no debugging symbols found)
Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
[Thread debugging using libthread_db enabled]
[New Thread -1249503008 (LWP 442)]
[New Thread -1281143888 (LWP 446)]
[New Thread -1272751184 (LWP 445)]
[New Thread -1264358480 (LWP 444)]
[New Thread -1255965776 (LWP 443)]
[KCrash handler]
#9  0xb670da59 in DwStrcasecmp () from /usr/lib/libmimelib.so.1
#10 0xb670dae2 in DwHeaders::FindField () from /usr/lib/libmimelib.so.1
#11 0xb7d2983d in KMMessage::headerField () from /usr/lib/libkmailprivate.so
#12 0xb7d2a0c3 in KMail::FolderJob::FolderJob ()
   from /usr/lib/libkmailprivate.so
#13 0xb7d2b02c in KMail::ImapJob::ImapJob () from /usr/lib/libkmailprivate.so
#14 0xb7d2bda2 in KMFolderImap::doCreateJob ()
   from /usr/lib/libkmailprivate.so
#15 0xb7c8b2ff in FolderStorage::createJob () from /usr/lib/libkmailprivate.so
#16 0xb7c94d95 in KMFolder::createJob () from /usr/lib/libkmailprivate.so
#17 0xb7d216d7 in KMMainWidget::slotMsgSelected ()
   from /usr/lib/libkmailprivate.so
#18 0xb7e2aa0e in KMMainWidget::qt_invoke () from /usr/lib/libkmailprivate.so
#19 0xb7080d4f in QObject::activate_signal (this=0x83973e0, clist=0x81299c0, 
    o=0xbfe1e004) at kernel/qobject.cpp:2356
#20 0xb7baf88e in KMHeaders::selected () from /usr/lib/libkmailprivate.so
#21 0xb7c9e513 in KMHeaders::highlightMessage ()
   from /usr/lib/libkmailprivate.so
#22 0xb7c9e8ea in KMHeaders::highlightMessage ()
   from /usr/lib/libkmailprivate.so
#23 0xb7d996c6 in KMHeaders::qt_invoke () from /usr/lib/libkmailprivate.so
#24 0xb7080d4f in QObject::activate_signal (this=0x83973e0, clist=0x83c61f8, 
    o=0xbfe1e148) at kernel/qobject.cpp:2356
#25 0xb7421c60 in QListView::currentChanged (this=0x83973e0, t0=0x8ff11c8)
    at .moc/debug-shared-mt/moc_qlistview.cpp:328
#26 0xb7179a94 in QListView::setCurrentItem (this=0x83973e0, i=0x8ff11c8)
    at widgets/qlistview.cpp:5477
#27 0xb7c9f350 in KMHeaders::setCurrentMsg () from /usr/lib/libkmailprivate.so
#28 0xb7d001c6 in KMHeaders::nextUnreadMessage ()
   from /usr/lib/libkmailprivate.so
#29 0xb7d76a9e in KMMainWidget::slotNextUnreadMessage ()
   from /usr/lib/libkmailprivate.so
#30 0xb7e2b3f0 in KMMainWidget::qt_invoke () from /usr/lib/libkmailprivate.so
#31 0xb7080d4f in QObject::activate_signal (this=0x844e5b8, clist=0x844e7f0, 
    o=0xbfe1e32c) at kernel/qobject.cpp:2356
#32 0xb70817e0 in QObject::activate_signal (this=0x844e5b8, signal=2)
    at kernel/qobject.cpp:2325
#33 0xb5e19259 in KAction::activated (this=0x844e5b8) at ./kaction.moc:176
#34 0xb5e4e971 in KAction::slotActivated (this=0x844e5b8)
    at /tmp/buildd/kdelibs-3.5.5a.dfsg.1/./kdeui/kaction.cpp:1102
#35 0xb5f2efaf in KAction::qt_invoke (this=0x83973e0, _id=15, _o=0xbfe1e43c)
    at ./kaction.moc:218
#36 0xb7080d4f in QObject::activate_signal (this=0x8492160, clist=0x844ef90, 
    o=0xbfe1e43c) at kernel/qobject.cpp:2356
#37 0xb70817e0 in QObject::activate_signal (this=0x8492160, signal=2)
    at kernel/qobject.cpp:2325
#38 0xb76569c9 in KAccelPrivate::menuItemActivated (this=0x8492160)
    at ./kaccelprivate.moc:110
#39 0xb76a66b7 in KAccelPrivate::emitActivatedSignal (this=0x8492160, 
    pAction=0x84c5c60)
    at /tmp/buildd/kdelibs-3.5.5a.dfsg.1/./kdecore/kaccel.cpp:403
#40 0xb77314bc in KAccelPrivate::eventFilter (this=0x8492160, 
    pEvent=0xbfe1e90c)
    at /tmp/buildd/kdelibs-3.5.5a.dfsg.1/./kdecore/kaccel.cpp:373
#41 0xb7080302 in QObject::activate_filters (this=0x837e730, e=0xbfe1e90c)
    at kernel/qobject.cpp:903
#42 0xb7080380 in QObject::event (this=0x837e730, e=0xbfe1e90c)
    at kernel/qobject.cpp:735
#43 0xb70b7612 in QWidget::event (this=0x837e730, e=0xbfe1e90c)
    at kernel/qwidget.cpp:4678
#44 0xb718c8bc in QMainWindow::event (this=0x837e730, e=0xbfe1e90c)
    at widgets/qmainwindow.cpp:1687
#45 0xb7018c26 in QApplication::internalNotify (this=0xbfe1edc4, 
    receiver=0x837e730, e=0xbfe1e90c) at kernel/qapplication.cpp:2635
#46 0xb701abda in QApplication::notify (this=0xbfe1edc4, receiver=0x8419308, 
    e=0xbfe1e90c) at kernel/qapplication.cpp:2392
#47 0xb7740e0e in KApplication::notify (this=0xbfe1edc4, receiver=0x8419308, 
    event=0xbfe1e90c)
    at /tmp/buildd/kdelibs-3.5.5a.dfsg.1/./kdecore/kapplication.cpp:550
#48 0xb76b2bc7 in KAccelEventHandler::x11Event (this=0x837f588, 
    pEvent=0xbfe1ec38) at /usr/share/qt3/include/qapplication.h:520
#49 0xb7737c03 in KApplication::x11EventFilter (this=0xbfe1edc4, 
    _event=0xbfe1ec38)
    at /tmp/buildd/kdelibs-3.5.5a.dfsg.1/./kdecore/kapplication.cpp:1651
#50 0xb6f99183 in qt_x11EventFilter (ev=0xbfe1ec38)
    at kernel/qapplication_x11.cpp:387
#51 0xb6fa90ab in QApplication::x11ProcessEvent (this=0xbfe1edc4, 
    event=0xbfe1ec38) at kernel/qapplication_x11.cpp:3343
#52 0xb6fbfd02 in QEventLoop::processEvents (this=0x8091400, flags=4)
    at kernel/qeventloop_x11.cpp:192
#53 0xb7033179 in QEventLoop::enterLoop (this=0x8091400)
    at kernel/qeventloop.cpp:198
#54 0xb7032f9a in QEventLoop::exec (this=0x8091400)
    at kernel/qeventloop.cpp:145
#55 0xb701a7bf in QApplication::exec (this=0xbfe1edc4)
    at kernel/qapplication.cpp:2758
#56 0x0804a094 in ?? ()
#57 0xbfe1edc4 in ?? ()
#58 0xbfe1efb0 in ?? ()
#59 0x00000000 in ?? ()