I tried all kind of things to fix it like just unchecking "Just items I follow" several times, re-login, clearing browser cache, using another browser, ..... but nothing worked for me. But in the end I tried something different that worked: I logged into the forum via 2 PC's (normal one and laptop) I normally use and then logged out on the one and then on the other one. After that I relogged on only one and it worked.... strange Now I'm back to normal with no problems at all