samba - Jul 2006 - Winbind Troubles... string_to_sid: Sid S-0-0 is not in a valid format.

Hello!

I posted before, figured I'd try again and provide more information in
the original post.  I'm running samba-3.0.22-1.fc5, joined to a W2K3
domain.  All features appear to work - I've been running it this way for
a month.  This message appears not  to actually affect anything, and it
occurs every 30 seconds or so.  I'll be happy to post my configs, if
necessary.  This set of messages appears in my logs repeatedly... every
60 seconds or so.

Jul  6 15:43:01 mgprisvr winbindd[6361]: [2006/07/06 15:43:01, 0]
lib/util_sid.c:string_to_sid(285)
Jul  6 15:43:01 mgprisvr winbindd[6361]:   string_to_sid: Sid S-0-0 is
not in a valid format.
Jul  6 15:43:01 mgprisvr winbindd[6361]: [2006/07/06 15:43:01, 0]
lib/util_sid.c:string_to_sid(285)
Jul  6 15:43:01 mgprisvr winbindd[6361]:   string_to_sid: Sid S-0-0 is
not in a valid format.
Jul  6 15:43:01 mgprisvr winbindd[6361]: [2006/07/06 15:43:01, 0]
lib/util_sid.c:string_to_sid(285)
Jul  6 15:43:01 mgprisvr winbindd[6361]:   string_to_sid: Sid S-0-0 is
not in a valid format.
Jul  6 15:43:01 mgprisvr winbindd[6361]: [2006/07/06 15:43:01, 0]
lib/util_sid.c:string_to_sid(285)
Jul  6 15:43:01 mgprisvr winbindd[6361]:   string_to_sid: Sid S-0-0 is
not in a valid format.
Jul  6 15:44:01 mgprisvr winbindd[6361]: [2006/07/06 15:44:01, 0]
lib/util_sid.c:string_to_sid(285)

Any ideas on what this means and how to fix it?  I'd be willing to turn
of Winbind logging, if possible...

Thanks!

Nolan Garrett