I have that problem too!!!!!!!!!!!! Though in my opinion it is just a vista thing. Vista hates Fiesta. The only thing I could do to get it to work was to exit out of everything I wasn't using and play. Lately that hasn't been working (and by lately I mean the last time I played which was august 14) and I haven't been able to get on Fiesta ever since on my Vista laptop. To get on I had to use my XP computer to play it and I just reimaged that computer just so I could play Fiesta. Though I haven't been on in a while D: I think it is just a vista hates Fiesta type thing.