AirPlay not working
Hello, my AirPlay icon has suddenly disappeared from all iOS devices. Internet is working, AirPlay is switched on on Apple TV, internet working on Apple TV otherwise, Internet working on other devices. On my iMac on display settings it shows: AirPlay: no device connected. I've tried resetting Apple TV and turning on and off devices but nothing works.
Apple TV, OS X Mountain Lion (10.8.2)