Bought the Apple TV 2 and ran into this problem. Searched all night for solutions, but never found any that would work. My setup: Wireless router (Dlink) in the den, computer running Windows 7 & iTunes in my office. I use buffalo tech wireless points that capture the wireless signal and I then connect that to each computer by Ethernet. . Everything works well. Have the same setup in the living room where the Apple TV, DirectTV and the Roku 2 all use the same point. So I hook up the Apple TV2 and it recognizes that it is a wired connection. It found my network and the internet. I am able to play trailers, connect to my Netflix account, run network connection test and all is great. Except that even after turning home sharing on on both the ATV2 and iTunes (on and off several times to ensure the id and password were the same), the ATV2 would never show my shared library. I tries everything I read in support documents, opening ports on my firewall, ensuring the correct services were running, etc. No go. So this morning I unhook the ethernet and try running it wireless. It picks up my library. Can anyone think of ANYTHING I was doing wrong that would prevent the library from showing up, yet everything else worked while hooked up to the ethernet port?