Just today I've been unable to airplay from any of my devices. No settings on any device have been adjusted. I can access the apple tv via remote from the iPad and the atv can access my itunes library on my computer no problem. However when I attempt to connect my itunes from my computer via multiple speakers, the box will not remained check, and I'm getting similar results on the ipad when I go to the airplay button. If I attempt to turn on display mirror, the apple tv option disappears from the iPad momentarily. The oddest thing of all is I didn't even know I was having this problem until a friend of mine texted me to trouble shoot for him as he was having the same problem. Is anybody else having this problem?