I've had problems with streaming, so I decided to wire everything with an Ethernet cable instead. If I connect the Ethernet cable directly to my iMac, streaming works perfectly. But then I don't have any internet access on the AppleTV, which I guess is why you are supposed to connect the Ethernet cable from the Apple TV to your router, not to your computer. Well I tried that. But since my router from Comcast only has two Ethernet ports (one of which goes to my Airport Extreme station) connecting the Ethernet cable from the AppleTV to the other port on the router means that there still has to be a wireless connection between the computer and the router - so isn't this defeating the whole goal of a wired connection? More importantly, when I set up the Ethernet cable, suddenly when I try to play any of my movies or TV shows that are not synced I get the message "cannot be played. Format is was not recognized." What is the cause of this? And what am I doing wrong? There must be some correct way of connecting the AppleTV via Ethernet cables that I am not doing. Any help would be greatly appreciated. Thanks.