I just got that same message. I had been waiting in the queue for the Staff ride Mr. Toad. The timer said enter and when I clicked it the message popped up and I missed getting in the room. So sad. VMK you really know how to tick ppl off. %$XU*&^(##+
I got that yesterday while using firefox. I figured that it was probably telling me that I needed to log out and close down firefox for a minute. So that's what I did and then re-logged back in. Haven't seen it since.