I currently have 4 Apple Tv 2s in my home. Only 1 of them is wired and the other 3 are connected to my airport extreme. They all get media via a 27 inch imac that is connected directly to the airport via ethernet cable. The issue I am having is that sometimes when I turn on one of the apple tvs, it is not able to connect to itunes even though it is running on the imac. If I turn off home sharing and turn it back on on either the atv or the imac, the atv is able to connect perfectly. Does anyone else have this issue or know how I can correct it? All of the atvs as well as the imac are running the current firmware and osx version.