[Samba] samba domain

[yudi shiddiq]

Need help!!! 

I have samba domain controller with samba-3.5.4-4.1.i586 
and openldap2-2.4.21-9.1.i586, when trial everything OK, client xp, win7, and 
vista can login, join domain, and access other server using auth to ldap, but 
now without any changes my client failed to join domain(xp and win7) and cannot 
change password via Ctrl+Alt+Del(message="the system cannot change your password 
now because the domain is not available" ), but i still can access other 
server(need auth from ldap).

anybody can help please???

Thx B4,,,,