hello, i'm configuring a member server (samba 3.0.28) to add it to a domain with one PDC and several BDC (all of them 3.0.20b). This server is using NSS/LDAP as explained at: http://us1.samba.org/samba/docs/man/Samba-Guide/unixclients.html#sdcsdmldap i'm also using the idmap domains configuration options (which are newer that the above example) to resolve the user id mapping, Samba seems starts with no errors, but when i try to mount a share i can see the following lines in the machine log file: [2008/02/07 20:01:16, 0, effective(0, 0), real(0, 0)] auth/auth_util.c:create_builtin_administrators(792) create_builtin_administrators: Failed to create Administrators [2008/02/07 20:01:16, 0, effective(0, 0), real(0, 0)] auth/auth_util.c:create_builtin_users(758) create_builtin_users: Failed to create Users i've seen that the 'net' command includes an option to create builtin groups, but i don't understand if this command will override my already existing ldap groups with builtin groups someone can explain what means builtin groups and for what reason are needed in a nss/ldap configuration. thanks in advance! toni