[Samba] Ntlm_auth authentication problem issue

[orlandox]

Hi, I have an arquitecture, of squid-Active Directory with NTLM 
authentication, I have users registered in Active Directory with 
character 'ñ' in this username, with ldap authentication work well, but 
with ntlm the user is not found, and can't be authenticated.

Is a problem of charset?, my linux use utf-8. Maybe change it to latin-1 
could resolve? with the variables unix charset, dos charset?