Configuration: Lotus Foundations Start Server 1.2.1 (Samba 3.4.3) acting as domain controller. Windows Server 2008 acting as SQL Server only.
Problem: Upgraded to Windows Server 2008 R2 and Windows Server would not join domain controlled by Lotus Foundations Start Server.
Work around: Backed off to Windows Server 2008.
Bummer factor: I'm sitting on $1,000 worth of Windows Server 2008 R2
Reason for submitting: To see if I did something wrong, and if not, let others know of issue.