CMS Permissions not working
 

I have just set up a forum and for one section (ADMIN ONLY) have denied all access for all usergroups, ie the only boxes ticked are for the Admistrators usergroup.


However this just isn't working, the section is viewable by anyone not logged in or registered members.

This is with 4.0.5 - can anyone help please? (sorry cannot give the URL as it's in development and confidential at the moment)