CVS ldap authentication

I am trying to convert all my redhat servers over to ldap. I have solved almost all the probems but am having trouble getting cvs pserver to authenticate. I'm running redhat 4. Just patched everything the other day.
cvs is cvs-1.11.17-9.1.el4_7.1. Any suggestions would be welcome.

Obviously I've already googled and searched this forum but found nothing that worked.

Have u checked the CVS server logs ?

If so paste the contents