Since the last couple of updates I've had issues with my ATV2 losing connection to my iMac and My iTunes Library. I either have to reboot the iMac or the ATV or Both to get it to recognize. Today even after watching a movie with no issue it refused to find further content when the movie was done. I've got the sleep settings on the iMac ok so I'm not sure what's happening, it's frustrating and I'm not holding out much hope for this not happening on the ATV3. I've tied both Wireless and Ethernet with the same results.