Ops!
It was my fault
But there's an other problem...
Now my administrators/moderators can't login to the admin interface/moderation interface, because the DISABLE_PASSWORD_CLEARING thing doesn't work with these validation forms.
I tried to set this definition in admin/global.php and modcp/global.php but the passwords continue to pass MD5 codified (and empty value in the vb_login_password var).
I know that i can put these login in the ldapconfig.php field to skip the LDAP validation, but there could be other way to perform this??
Thanks