problem with wins server with SAMBA

[Adel ESSAFI]

Hi list
I am configuring SAMBA as PDC on F7. All configuration works fine. the 
serveur is called DSERVER, the domain is SOCINFO. I have activated the 
wins support on the samba serveur. However, the master of the domain 
SOCINFO is ESSTT2007. Can someone help me. The normal behaviour is to 
have DSERVER as master. Any input will be helpful
regards
Adel

[adel at grid007 ~]$ smbclient -L localhost -U adel
Password:
Anonymous login successful
Domain=[SOCINFO] OS=[Unix] Server=[Samba 3.0.26a-0.fc7]

        Sharename       Type      Comment
        ---------       ----      -------
        IPC$            IPC       IPC Service (serveur samba 3.0.26a-0.fc7)
        samsungDI       Printer   samsungDI
        epson           Printer   epson
Anonymous login successful
Domain=[SOCINFO] OS=[Unix] Server=[Samba 3.0.26a-0.fc7]

        Server               Comment
        ---------            -------

        Workgroup            Master
        ---------            -------
...........................................................................
        SOCINFO              ESSTT2007
...........................................................................