I am experiencing the following bug: While watching Apple TV2, if my iMac goes to sleep, it will interrupt the home sharing. As a workaround, I have to disable home sharing on the Apple TV2 and then immediately re-enable it to get it started back up. My iMac remains sleeping during this disabling and re-enabling workaround. This started happening right after I upgraded to iTunes 11. Anyone having the same issue? Any solutions. I just now disabled the firewall on the iMac to see if that has anything to do with it. But it seems that the sleeping is triggering the disconnect. Edit: Just performed this test.. disabled the firewall on the iMac, and so far so good. I do remember having an issue with iTunes 11 asking permission for incoming connections when I initially installed it, but that message went away.