I've installed XBMC and Boxee and everything works great.
The only problem I have is getting the ATV to wake up once I've switched the receiver to another input (like watch tv, etc). The ATV is connected directly to a Yamaha receiver via HDMI. It's as if, once the ATV doesn't sense something at the other end of the HDMI, it locks up and I have to hold DOWN + MENU to reboot, which takes like 5 mins.
The only problem I have is getting the ATV to wake up once I've switched the receiver to another input (like watch tv, etc). The ATV is connected directly to a Yamaha receiver via HDMI. It's as if, once the ATV doesn't sense something at the other end of the HDMI, it locks up and I have to hold DOWN + MENU to reboot, which takes like 5 mins.