centos+ldap+osx client (10.5.6)

Hi all, I've config'd my Centos OpenLDAP server and my linux clients are LDAPing to it (login, etc...). While my OSX machines can login via OpenLDAP, some of the logins complain that the home directory cannot be found and uses /var/root for there home dirs. I can login on this very same OSX box as another user and my home dir is found. Does any one have some docs I can look at and start over in configing my OSX ciets to auth against an OpenLDAP server?