I have a problem with my ATV. It used to sync from my Extreme to my Express to my Apple TV. A year without any problem. For the last two weeks it syncs for 5 minutes, stops syncing (when I ask it to sync it says it cannot locate ATV) then drops off iTunes. I have done factory resets, reset my Express, dropped my firewall - been on the phone 5 times with Apple. It starts syncing then doesn't get past 500mg. Nothing works. When I try to stream video it says ATV doesn't recognize the format of videos I have watched on ATV for the past year without difficulty. It refuses to connect to iTunes store. I do a reset by unplugging ATV and it identifies iTunes store for 5 minutes, then says it can't find the store again. This is VERY frustrating. Anybody know what to do??