10.5.5 client update caused MCX / network users issues

Hi, We're running all Apple systems for OD master (network users and groups) and Apple hardware for client machines. So the setup is, we run one main OD machine for all user accounts, admin, user and MCX settings for ARD access and privileges. One main OD server (10.4.9) with specific MCX settings for ARD group/user access, and WGM for user accounts. So everything has been great and functioning well with the client machines running up to 10.5.4., ARD access, network logins, remote backups, etc., Now as we've updated the client machines to 10.5.5, the network logins are "broken". I didn't see anything in the documentation that needed to be addressed, did I miss something, or does anyone have a clue or direction where I might be able to look to re-enable my client machines while keeping the 10.5.5 updates? Thanks guys. -W-