Is anyone currently using CentOS 5.5 with 2008 R2 AD authentication and a fully Kerberized NFSv4? If so would you mind sharing your configuration with me?

I have been able to successfully get it working with Windows 2003 as discussed earlier on the list

http://lists.centos.org/pipermail/centos/2010-July/096374.html

With the exception that I had to use dynamic UIDs on the machine since we don't have Services for UNIX installed. Instead of going with a long drawn out certification of Windows 2003 R2 w/SFU, we plan to target our deployment in line with our Windows 2008 R2 campus deployment.

I have followed everything that I did with Windows 2003 to get it working but NFSv4 w/Kerberos doesn't seem to work with 2008 R2 at all. No matter what I try I consistently get

WARNING: Client not found in Kerberos database while getting initial ticket for principle NFS/hostname@DOMAIN using keytab

or

ERROR: No credentials found for connection to server

any help would be appreciated. I've been banging my head against a wall for a while now and may have damaged to many brain cells to see what's going wrong.