I found, that my Domain Controller's password has expired. It is never
renewed, but I do not see functional problems.

I opened a SR with NTS and was told by them, that they found the same
on their test machine and that it is normal behaviour.

I have the impression, that this is is only observed by myself since
applying OES2SP3 - under OES2SP2 I didn't see that behaviour but of
course did not really care for it. At least the latest password change
occurred immediately before applying SP3 to the Domain Controller.

Do you see the same on your Domain Controllers? Or do your Domain
Controllers update their passwords as the Computers in the Domain do?

W. Prindl