hi john,
i had the same problems in the past.
the solution is: don't mulithome a domaincontroller!!!
there are solution outside that discribes how you can do that.
but in reality you have too much problems with it.
http://support.microsoft.com/kb/272294/en-us
http://www.pcreview.co.uk/forums/thread-1450941.php
greetings
roger