samba - Sep 2006 - Failed to add computers to domain since samba 3.0.23

Dear All,

     I have a Samba PDC, backend with LDAP. After I upgrade samba from
3.0.22 to 3.0.23c, I cannot add any computer into this domain. The log
is showed below:

[2006/09/21 23:04:25, 0] auth/auth_util.c:create_builtin_administrators(785)
  create_builtin_administrators: Failed to create Administrators
[2006/09/21 23:04:25, 0] auth/auth_util.c:create_builtin_users(751)
  create_builtin_users: Failed to create Users
[2006/09/21 23:04:25, 0] auth/auth_util.c:create_builtin_administrators(785)
  create_builtin_administrators: Failed to create Administrators
[2006/09/21 23:04:25, 0] auth/auth_util.c:create_builtin_users(751)
  create_builtin_users: Failed to create Users

Do I need to create some group mapping? Can I map Domain Admins and
Administrators to the same unix group?

Thank you in advance.

With Best Regards,

      Jui-Nan