Home sharing disconnecting after 2-5 minutes
This is getting ridiculous. My home sharing doesn't maintain a connection for more than five minutes. I'm using an Apple TV 2, sharing from an iMac (11,2), network provided by Time Machine (2008 1st gen) and Airport Express (2010, A1264).
It's not a network problem, as Netflix, iTunes movie rentals, and even watching previously-purchased iTunes programs direct from the cloud are working without a problem.
I have five bars of network visible consistently. I'm running the 5GHz band, on a channel that is receiving no interference.
I've tried disabling the Apple TV sleep mode, disabling IPV6, and every other hare-brained scheme thought up by Genius Bar employees.
None of it works. And, the kicker: This system was working fine for over a year, before the new Airport Firmware (and Airport Utility) were released, iTunes was upgraded to 10.6, and the new interface release for the Apple TV was pushed out.
Apple: you screwed something up in one of those software / firmware releases. Stop trying to blame the network, the IPV6 settings, or whatever else is the problem. It's not those, it's you.
I don't know what you did, but you need to fix it. This is beyond frustrating.
iMac (21.5-inch Mid 2010), Mac OS X (10.7.3)