For some unknown reason over the weeked my CB 1.7 on Joomla 1.5 Intranet started forcing our users to log in to CB before they could click on any link.
The home page shows up, as go the menus, but clicking on any link throws a "403 - You are not authorised to view this resource."
Logging into CB solves the problem.
Since this is an internal site with no hooks to the outside world, I don't want them to take the extra step. One more click is one they don't take.