So yesterday I got a Harmony 520 and I set it up using the PC Media Center Apple TV preset. It works except for 3 things and I'm wondering if you guys can help me out a little bit. 1. It's slow, I can't scroll through my stuff as fluidly as my Apple TV remote. It's kind of a pain because sometimes I'll click twice and it will only move once. I tried setting the delay to 100ms and that didn't help. Any ideas? 2. The Apple TV will not turn off when I switch to another Activity. If I turn it off manually (hold down play) and then switch to different Activity, it will turn back on automatically. 3. How do I set it so it doesn't send a play event when I switch to the Apple TV. Every time I switch to Apple TV it starts to play something or clicks to another menu. Please help because I've been spending so much time trying to get this to work. (Oh and I tried adding the device as an "Mac Mini 1.66GHz Intel Core Duo" and that didn't work at all... I'm not sure what was wrong. I hope it's not a limitation of the remote. The Apple TV remote is a lot faster (and it used to seem sluggish to me until I used the Harmony Remote).