Just bought an Apple TV and connected to my TV and all looks good. I'm having an issue with Home Sharing, however. The library is found, I play something from the library, it plays for about three minutes, then drops. I then cannot find the library in the "Computers" section of Apple TV. If I then quit iTunes and start it again, it shows up again on the Apple TV and I can start again only to be dropped three minutes later. I have seen some posts blaming the router not supporting Bonjour. I am on the phone now with Belkin.
Using: Apple TV connected via HDMI to a Panasonic LED TV, streaming from a MacBook Air 2010
I really think this is a Home Sharing issue.