I have an Apple TV 3rd Generation and it has been working fairly well up until about a week ago. My Apple TV cannot find any of my devices (Macbook Pro mid 2010, iPhone 4S or my iPad 2nd Gen). On the Computers section of my ATV, it gives me the message about how computers with this home sharing account will show up here, even though my Macbook is turned on, has iTunes 11 open and has home sharing enabled; all with the same Apple ID. I have tried restoring my ATV but the problem is still there. I also cannot AirPlay mirror from my iOS devices. As with my MB and my iOS devices, my ATV doesn't show up, so there is no option to AirPlay whatsoever. How is this resolved?