[Samba] 3.0.0rc2 log error message - domain_user_groups related

[James W. Beauchamp]

Hi all:
I've looked in the archives and seen several refernces to this error message
but no solution put forth.  I'm running samba 3.0.0 rc2 on RedHat 9.

The following shows up for each of my users in the syslog:

Sep  8 15:17:14 main2 smbd[31974]:   get_domain_user_groups: primary gid of
user [nsb] is not a Domain group !
Sep  8 15:17:14 main2 smbd[31974]:   get_domain_user_groups: You should fix
it, NT doesn't like that

My smb.conf is the same one from 2.2.3 that I upgraded from.

Any idea what is causing this and how to fix it?

TIA

James