REL 6.2 - cannot login as regular user, only as root

Hi,
I have been installing REL 4.7 for the most part on our servers. Now I'm playing with REL 6.2. I had to edit a file to get LDAP to work (compared w/ REL 4.7). Now I can mount and login as root but I cannot remote login as a user (though once logged in I can su to a LDAP user). What am I missing?

Thanks in advance