[Samba] Administrator account can not connect

[Willem Jaap Zwart]

Hi

We have the following setup:
= freebsd 5.2-release with Samba 3.0.10
= samba uses 'security = domain' and authenticates against a W2K ADS
= this works fine for all users EXCEPT Administrator

The log for the connecting host lists:

domain_client_validate: unable to validate password for user
Administrator in domain OURDOM to Domain controller \\OURLDAP. Error
was NT_STATUS_WRONG_PASSWORD.

and

[2005/03/15 14:09:17, 0] auth/auth_util.c:make_server_info_info3(1134)
  make_server_info_info3: pdb_init_sam failed!

The password is 100% sure OK (we use NIS and SFU to logon to the
FreeBSD box and this works fine for all accounts with the same
password).

We tried several things (adding a local user Administrator etc etc),
but no go.
Any help appreciated

Willem