[Samba] Cannot create builtin/administrator group and getpeername failed

[Poil]

Hello,
My PDC is working but I have some errors on my log, I'm searching since 
some days but I cannot find why.

In log.smbd I have
[2006/08/22 16:30:22, 0] lib/util_sock.c:get_peer_addr(1229)
  getpeername failed. Error was Noeud final de transport n'est pas connecté

And In log.MachineName I have
[2006/08/22 19:17:33, 0] auth/auth_util.c:create_local_nt_token(899)
  create_local_nt_token: Failed to create BUILTIN\Administrators group!
[2006/08/22 19:18:13, 0] auth/auth_util.c:create_builtin_users(729)
  create_builtin_users: Failed to create Users
[2006/08/22 19:18:13, 0] auth/auth_util.c:create_local_nt_token(899)
  create_local_nt_token: Failed to create BUILTIN\Administrators group!

If you have an idea,

Thanks