Can't see users in Active Directory Groups

Hello,

I have setup a RH5 server sparx, with ldap authentication, i can see individual users, and groups that are in AD. But when I try to view the groups, it shows 0 members and 0 admins, when i know there are members in the group. can someone tell what im doing wrong? I want to add the current AD groups as is, and have them setup just like AD.