I still have issues with my UVerse box. I believe the problem is the box can only output ether 1080i or 720p and the native content on some channels are 720p and some are 1080i. So if I leave the box at 1080i and the content is 720p the box converts it to 1080i then the projector converts it to 1080p causing a jerky picture in scans and vice versa if I set the box to 720p and the channel is 1080i native it causes the same problem. Everything works great with PS3, BR player and HTPC all set to output 1080p. I haven't found a solution other than changing the output of the box every time I change channels.
"Smart enough to know better, to old to care" ------ Dedicated Bat Cave Home Theater, JVC RS49U/Mitsubishi HC7900DW Projector, 110" 16:9 Jamestown screen with variable power masking for CIW 2.50:1 to 16:9, Marantz 7009 with 7.1.4 Atmos with Ohm mains,3 DIY Subs (2 15" (1 ported, 1 sealed and a 12" 4th order bandpass), 1 DIY butt kicker, Custom Built HTPC, 18TB DroboFS NAS