First let me apologize before I start! I know there is a lot written here already on the topic. I have read the posts but nothing seems to help. I am at a loss to know what to do next. I have 2 AppleTV's. They have identical setups other than the device names of course. Both connect via 802.11n wireless using a Time Capsule as the router. Both have the latest software installed. Both are set up to have an IP address assigned automatically. Both are set up for a custom sync where no media is downloaded to the local drive. Effectively they stream without using the streaming setup (sync selected but nothing is selected). iTunes is installed on a Vista machine and it is also the latest version (9.0.1?) One of the AppleTV's works and syncs flawlessly, every time. The other sometimes shows up in iTunes and sometimes not. When it shows up in iTunes, a sync request returns a message box stating "Apple TV is not responding". I may get an evening where a restart of the AppleTV allows it to be used to watch content but hours later it goes back to it's unresponsive self. Go to the AppleTV itself and it will show no "media" on the device. Ask it to look at the internet and it connects to the iTunes store. I am baffled. Can someone give me any clue at all?