Had this for a few days, but it got irritating and unusable today.
So I go to my Admin Options and I get presented with the extra security Admin Login page. I fill the form submit and if I click the Go to forum link I get redirected to the admin_login.asp, again.
If I allow it to time out or manually make it go to admin_home.asp everything is al right. But wehn I try to access any of the admin_ pages I get a redirect to the admin_login.asp and have to log in. Which is making my Admin Member Search pretty unusable right now.
Maybe your server is having problems with sessions or you could be having problems with cookies (though if you can login normally to access the forum functions and you are only having problems with the admin options this is not likely).
sounds most likely to be a server issue since admin login uses the session object, so maybe IIS keeps resetting itself on the server, I would contact your host and get them to investigate the problem