[Samba] domain admin cannot admin pc

[Brian Krusic]

Hi all,

My env;
Centos 5.3
Samba 3.0.33
Samba PDC using LDAP backend.

Problem;
I can join the XP box to my Samba domain (called DOMAIN) using the  
root user and pass.

But after rebooting and logging into that XP box as root, I can not  
admin the box and am treated as a regular user.

Commands and results;
net rpc group members "Domain Admins"

DOMAIN\root


C:\>net localgroup Administrators
Alias name     Administrators
Comment        Administrators have complete and unrestricted access to  
the computer/domain

Members

-----------------------------------------------------------------------
Administrator
DOMAIN\Domain Admins

getent group
Domain Admins:*:512:root
**There is more groups but I felt the above line was relevant.

I've combed google but found that I shouldn't have a problem.
Any ideas?