Hello everyone, I am a long time reader but first time poster here. I have been using an ATV2 + iMac to watch my own movies encoded via handbrake (on "normal" preset) without any problems. I have decided to purchase an older ATV (which I did on Amazon) that had ATV Flash (with Nito TV, Boxee, XBMC, etc already installed) so I can use an external HD with my movies on it so I would not have to leave my iMac running 24/7. When I hooked up the unit I did not have any problems with connecting to my wifi and iMac library. The interface seems laggy (when moving around the different settings) and when I try to play some of my iTunes movie library it plays for a few secs then the unit completely freezes. Is this a problem with the unit or am I just using the wrong handbrake preset and overwhelming it? Any advice would be appreciated. Thanks.