This is not a sleep issue. It is definitely an iTunes 11 problem with home sharing
I have a windows 7 computer, an iMac, two ATV gen2, two iPads, two iPhones and and iPod.
Up until then mistake of updating my iTunes to 11, they all worked flawlessly. I was able to stream my large video and music library to any of my devices. No I can see the libraries, and can even start the video. However it just goes to an hourglass and never plays anything.
Apple has a serious problem with their quality control these days. Jobs would never have allow crap like this to take place.
I know apple techs do read these forums at times.
When can we see some relief????