Ruby-net-ldap fail

Hi,
I am using ruby-net-ldap to connect to a Active Directory server.
The problem is that it only works for users that are in "Users"
Organization unit.
(See attachment) ==> it can connect with joe user. But it fails to
connect with users from OU "terceiros" for example.

why is that?
Is there a better gem for that?

here is the code:
  1 require 'rubygems'
  2 require 'net/ldap'
  3
  4 ldap = Net::LDAP.new
  5 ldap.host = "10.1.0.32"
  6 ldap.port = "389"
  7
  8 us = "userhere"
  9 ps = "passwordhere"
 10
 11 ldap.authenticate us, ps
 12
 13 puts ldap.bind
 14 puts ldap.get_operation_result.message


regards

Attachments:
http://www.ruby-forum.com/attachment/3918/Untitled.png

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