As an adminstrator/super user in Dot net nuke, I have ninety seconds in which to update settings from configuration menus otherwise I get an 'Access Denied' 'You do not have access to view this page within the website. It is apparent that dot net nuke is logging the AD user out after 90s of inactivity.

As a superuser, there is a setting called Time Before Timeout that has a minimum setting of 90s - I have set this to 9999s but the problem still occurs.