Domain policy is not reflected on the Domain Controller.

I have a network with one domain controller and about 45 computers. I have enabled audit logging for account logon failures. When I test the logging on any of the other computers in the tree it works great. When it login in wrong on the domain controller incorrectly the check to make sure that it would be logged, nothing shows up in the security event log. The domain policy works as it should on all the other computers except the DC. Any ideas why?