I have all 3 working like above as of last night.. The only problem that I have noticed at the moment, is when deleting a user from CB interface.. I get a TON of mysql errors, in which I believe are coming from the PHPBB side. It does delete the user in Joomla and CB, but not in PHPBB. End up having to do that manually. Other than that it does synchro, and registration is done through CB..