[K12OSN] another samba thing?

[Huck]

In checking /var/log/messages  I noticed this:

Sep  1 14:38:27 ltsp smbd[27349]:   get_domain_user_groups: primary gid 
of user [USERNAME] is not a Domain group !
Sep  1 14:38:27 ltsp smbd[27349]:   get_domain_user_groups: You should 
fix it, NT doesn't like that

Anyone have any sort of  insight?

using samba as the PDC for XP Pro lab...
what does NT care what my linux user's GID is?

--Huck