samba - Jun 2002 - Error in Samba 2.2.4 and printer Folder

Hello,
every time I browse the printer folder in any of the 2 samba servers from a
W2K Wks, I get this error:

[2002/06/02 15:58:50, 0] smbd/service.c:make_connection(252)
  contmaia334 (10.240.5.116) couldn't find service
::{2227a280-3aea-1069-a2de-08
002b30309d}

I have a Samba Server as PDC and another that gets the authentication from
the PDC (=domain). This error appears in both two.
Where can I find what service is this?

Another thing:
when I ask for the security properties of each printer, if the printer is
connected to the PDC I get the right names of the users (DOMAIN/root); in
the other server i get S-1-5.... (it's the root user)

Cumprimentos
Alexandre M. Santos

Contacto-Sociedade de Constru??es, S.A.
Escrit?rio Norte: Lugar do Espido - Via Norte - 4470 Maia
Ext. 44330 - 229404330
Geral 44300 - 229404300
Fax 229404304/05