I have a setup with a SBS 2008 and some other servers, (SQL, TS etc.) and around 15 XP pro clients and 2 Vista business.
The XP’s are just working smooth, but then any of the vista’s are loging off, then it takes up to 12 hours to log off.
Then the vista’s are outside the domaine, then it logs off fine.
I have been around DNS, GPO and if course the eventlog, but there are not any clues to this solution.