application variables changing themselves

the problem: users login and can navigate an administration area, however, at random (it seems) when you click on a link to navigate to another spot in the admin portion the application variable used to denote the user as an admin is getting changed, and therefore load the homepage because it thinks you are not logged in. any suggestions? need more info? just post.

Why are you using the application level variables to determine if a user is admin or not? That should be a session level variable. In the case of using an application variable for user auth if one user is logged in as an admin then all the users are logged in as an admin, and if one users isn't logged on, then they all aren't logged on. I assure you that the application variables aren't changing themselves, its something in your logic.