Yesterday I discovered a quirk: I found that while playing networked music files on my Apple TV (connected via HDMI to a receiver input), if I then to switch off the television (connected to the receiver output, also via HDMI), the Apple TV suddenly stops playing music when the TV powers down. When I turn the screen back on, the Apple TV displays a message about an error accessing content. Seems that the powering off of the Panny somehow disrupts the Apple TV's network connection to my music files. I don't think I've ever noticed this behavior before, since I usually enjoy a screensaver of high-res album art while listening, rather than trying to listen with the television screen turned off. Not sure at this point whether it is the Apple TV, the receiver, or the television to blame. Minor issue, anyway, I suppose.