Hi. I have a new Mac Pro (lucky me, eh?) so, unsurprisingly it's running OS X Mavericks 10.9.1. When I attempt to stream video from iTunes to an Apple TV 3 it'll run for about 5 minutes (sometimes a little more, sometimes a little less) and then drop out. Apple TV goes back to the previous menu and iTunes has just stopped playing on my Mac. iTunes still shows itself connected to the Apple TV via Airplay but it isn't so I have to disconnect it, close the video and open it all up again after which it'll play for another few minutes (once I've forwarded to the right location because it goes back to the start). I'm using the Airplay button in iTunes and not mirroring in OS X. Here's why I think it's got something to do with Mavericks and nothing at all to do with my network or the video file or anything else. First of all, my Apple TV and Mac is networked via ethernet - no crappy wireless signal to worry about. Secondly, I still have my old Mac Pro 1,1 which is running Lion and when I try to stream the exact same video from iTunes on there it streams fine to my Apple TV with no drop outs. iTunes on my old Mac is 11.1.3 and on my new Mac is 11.1.4 so there's an outside chance it's iTunes, but I'm guessing it's Mavericks! Anyone got any ideas? Thanks!