Big problem, redirect loop & login issues

[DariuS7]

Sometime recently my 3.8 forum started freaking out. If you go to forum home it redirects in an infinite loop, and if the forums are turned off and then turned back on, it fixes itself for a small period of time then does it again.

Firefox has detected that the server is redirecting the request for this address in a way that will never complete.

Homepage isn't working either, and I've had a few members come to me saying that when they log in, it logs in correctly and then when it refreshes them to being logged in they are logged in as another user instead of themselves.

Right now one of my moderators is logged in as an administrator account.

Can anyone give me any insight on this problem? I'll contact the owner of my server when he gets online to see if there have been any errors on his end, but for now I'm fairly stumped as to what I should be doing to fix this.

Confirming login as an admin redirects you to login as admin again, when doing stuff in the control panel or anything like that.

[Marco van Herwaarden]

Check the cookie settings using tools.php and reset if needed.

Moderators gettings into an admin account could indicate a bad configured proxy server that delivers cached pagews to the wrong connection.

Bad configured load balancer or such could also be the cause of some of these problems.

If none of the above, check your .htaccess rules if any and finally turn off modifications, ensure you have only original files and try with a default style.