Apple TV constantly loses connection, Apple TV constantly loses connection

All of a sudden, my Apple TV has started losing its connection with iTunes. It constantly ask to connect the home sharing, and when I check on iTunes, the home sharing is on. I have 4 Apple TVs, and they were all working just fine until a couple of weeks ago. ATVs and iTunes all have the most updated software as well. This can be so annoying. My network is working, and everything else that is on the network works except for the ATVs. Would appreciate whatever help I can get.

Thanks,

ev547