Airplay mirroring ATV2 with 4.4.4 does not work

I installed mountain lion and I see the Airplay icon on top of my screen, however I can’t see my apple tv 2 (JB). When I enter iTunes, there I can select my ATV. Someone any idea what the reason can be? Do I have to update the ATV Software? 

This was bought up in another thread, and the answer that resolved the issue was to update the ATV2 to the latest 5.0.2 firmware.