The trust relationship between this workstation and the primary domain failed.
It could be solved without the rejoin on Domain.
This Join often appen when you do a rollback to an old snapshot of some month in Virtualized Environment.
Here are the soluzion:
1) MS solution:
http://support.microsoft.com/kb/162797.
2) logon locally as administrator and give the following command:
C:\>cd /Windows/System32
netdom.exe resetpwd /s:/ud:DOMAIN\ /pd:*
