I have a full dedicated HT room in the basement and we usually watch movies there. 130" screen, full 7.1....(HT set-up in my sig). 95% blu-ray (own or rental) for 1080p/lossless audio, 5% via Comcast on demand. Last night, it was 6:15pm, just done with dinner. We have 3 relatively young kids; 7, 5, and 3 years old, so we like being done watching movies by 8:30pm latest for the nite time routine thing (brush teeth, short story, etc). We tried for 1st time to watch to watch a movie in our family room HD set-up via AppleTV instead of the basement HT room. We pre-viewed a few HD trailers and they came up instantly via AppleTV. The kids selected the movie "Ice Age: Dawn of Dino" in HD. Started the download directly in AppleTV, from reading http://reviews.cnet.com/digital-media-receivers/apple-tv-40gb/4505-6739_7-32306442.html and other reviews I expected to be able to watch the HD movie within 5-15 seconds, maybe 1 minute max. I had bad experience I got HD download 1% 24 min remaining, 1% 40min remaining, then shortly after 2% 2hr remaining.... I actually shutdown both computers to make sure no bandwidth being sucked by them. Still no improvement. We ended up going into the basement HT and watching via Comcast on demand "Land of the Lost" in HD (as so-so movie, but watchable, language not child appropriate at all). Comcast on demand always cues up and plays instantly btw. My hardware: SE Michigan, Comcast cable, I own the 2 month old SB6120 SURFboard®. DOCSIS® 3.0 Cable Modem, 2 month old AirPort Extreme, 1 month old AppleTV. AppleTV connection via 802.11n wireless network (all my other stuff hardwired via cat5e). I don't know where the download is % wise, went to bed after watching "Land of the Lost" in the basement HT and don't feel like turning everything on and waking kids/wife, I'll check in the morning. My dog wanted out for his "nightime pee", so I decided to check here to see if others had similar experience. I read this thread "Can rent and download SD movies, but not HD movies", http://forums.macrumors.com/showthread.php?t=811417 ,member "littfam" had similar issue, but his is qwest dsl, I'm Comcast cable. >>same problem, different services.....common thing is Apple servers?? My computer downloads/uploads for other "stuff" have been very fast, so I am at loss here.