Hi
I also went too fast and updated Joomla before CB...
On PhpMyAdmin, i imported the jos_users from a save i did just before i updated Joomla, and now i can login with the admin users.
BUT, in the CB users list, my Super Admin account doesn't appear !
I can anyway use this login / password to log in to the frontend, but still not to the backend.
Well, at least the client can log in and i can do anything i want, but if somebody has any idea about this super admin account problem, i'd be gratefull