I rented a movie through Amazon on my roku 2xs tonight. I had the option of SD or HD for a $1 more. I went with the HD. The video paused a few times and appeared to buffer and then come back on. Then the roku randomly rebooted. When I tried to resume the video would not play. Amazon help asked me to reboot the roku. I did and then the video played for a while longer and then appeared to buffer for a bit and then lost its connection. I rebooted the roku and this time the roku failed to connect to amazon repeatedly. I rebooted again. Same deal. I eventually gave up and watched the end of the movie in SD on my laptop. I have time warner internet 20Mbps. I guess I won't be renting anything in HD from amazon. I'll think twice before renting anything in SD either.