Sometimes I can't access this website

It's very strange, sometimes it lets me through, sometimes it doesn't.

I can view the main page and such, but I can never view "community" or "my account" without getting a website error.

Unfortunately, I can't post the error message yet but I will soon. I cleared my cookies and still had the problem.. mayb I need to do a cleanup with adaware to get rid of all those crappy things.