samba - Nov 2004 - Local administrator for domain user, vs local user

Hi,

If I add a domain user to a local client's Administrator group, that user 
seems to have less rights than if I add a local user to the local 
Administrator's group.  Specifically Windows XP SP2, and Samba 3.0.7.  I 
notice that the domain user can't load user hives, can't delete registry
keys
owned by local Administrators, and things like that.  Is this a problem with 
Windows or with Samba?  I had expected that a local administrator was a local 
administrator, no matter where they were authenticated from.

Thanks for your help.  I apologize if this is a duplicate -- my local system 
crashed and it doesn't look like it sent this mail when I composed it the 
first time.

Misty