I've got a Samba Server running on Ubuntu 10 that's a Primary Domain controller for a small domain of XP Clients. this server was working on Ubuntu 6.06, and I upgrades (6 to 8 and 8 to 10) and suddenly my domain user logins stopped working. I can join the domain, access file shares etc, but the machine says the domain is not available, and my event log has an entry that says "The RPC server is unavailable" when I tried to login. I'm sure I'm missing some setting, or some piece of the migration. Any ideas?