Server thinks it is a DC but it isn't
I've got a (windows 2k3) server which used to be a DC. It was demoted about 2 years ago, and is no longer a DC.
However, it still thinks it is!
When I go into Sites and Services, it isn't listed as a DC.
But if I go to the machine and try to change the name etc... it says it is a DC and I can't change the domain etc...
If I try to run dcpromo on it, it fails that also.
Problem is, I'm getting error '5805' and '5723' in the main AD logs.
Does anyone have any ideas what I should do to solve this?