we ourselfs had some AD issues today and I thought I should share this information. We had a a system with severe replication problems reporting these events in the event log. Also, during replication attempts, we got an "Access denied" or "Target principal name unknown" error.
All of this seems to boild down to the following knowledge base entry:
http://support.microsoft.com/default.aspx?scid=kb%3Ben-us%3B288167
Hopefully this information saves some of you some time
Rainer


