I've noticed that sometimes, I get a specific add that blocks my RPG and Store down-scroll menus. It disables my ability to get to things like the uShop, which is usually where I go, or the RPG Main or RPG Store. Quite a bother.
It's a white add advertising usually quizzes and the like. I was wondering if this was something that is preventable, because I often try to refresh, and the same add is there. It gets rather annoying, because I use a very slow dial-up connection.