From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.10) Gecko/20050719 Fedora/1.7.10-1.3.1

Description of problem:
After starting Kmail, selecting a folder causes kmail to crash intermittently. The  "kde crash handler" shows:

Using host libthread_db library "/lib/tls/libthread_db.so.1".
`shared object read from target memory' has disappeared; keeping its symbols.
[Thread debugging using libthread_db enabled]
[New Thread -1245219136 (LWP 6455)]
[KCrash handler]
#4  0xb7385402 in DwHeaders::FindField () from /usr/lib/libmimelib.so.1
#5  0xb7c26919 in KMMessage::headerField () from /usr/lib/libkmailprivate.so
#6  0xb7c274e7 in KMMessage::from () from /usr/lib/libkmailprivate.so
#7  0xb7df82ea in KMail::FancyHeaderStyle::format ()
   from /usr/lib/libkmailprivate.so
#8  0xb7d0571a in KMReaderWin::writeMsgHeader ()
   from /usr/lib/libkmailprivate.so
#9  0xb7d0792b in KMReaderWin::parseMsg () from /usr/lib/libkmailprivate.so
#10 0xb7d081d2 in KMReaderWin::displayMessage ()
   from /usr/lib/libkmailprivate.so
#11 0xb7d08393 in KMReaderWin::updateReaderWin ()
   from /usr/lib/libkmailprivate.so
#12 0xb7d0a350 in KMReaderWin::qt_invoke () from /usr/lib/libkmailprivate.so
#13 0xb637e10e in QObject::activate_signal ()
   from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#14 0xb637e7e4 in QObject::activate_signal ()
   from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#15 0xb66b28dd in QTimer::timeout () from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#16 0xb639debc in QTimer::event () from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#17 0xb631f539 in QApplication::internalNotify ()
   from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#18 0xb631f6ca in QApplication::notify ()
   from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#19 0xb691b028 in KApplication::notify () from /usr/lib/libkdecore.so.4
#20 0xb63138ab in QEventLoop::activateTimers ()
   from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#21 0xb62cf6fe in QEventLoop::processEvents ()
   from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#22 0xb6334b85 in QEventLoop::enterLoop ()
   from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#23 0xb6334ade in QEventLoop::exec () from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#24 0xb631e73b in QApplication::exec () from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#25 0x0804a2fc in ?? ()
#26 0xbfdd2480 in ?? ()
#27 0xbfdd2390 in ?? ()
#28 0x00000000 in ?? ()


Regards, Mike Klinke

Version-Release number of selected component (if applicable):
kdepim-3.4.2-0.fc3.1

How reproducible:
Sometimes

Steps to Reproduce:
1.Start KDE
2.Navigate to a folder
3.
  

Actual Results:  Crash as described above

Expected Results:  No crash

Additional info: