[Ephrum]

Check the back plug of the 360, maybe it got switched from ''HDTV'' to ''standard'' or whatever... or vis-versa if you don't use the composite cables and just use the standard RCA ones? Or move the 360 to another TV and try it there to see if maybe it's the TV? I dunno lol. When I tried to use HDTV on my 27'' POS that actually HAS Component inputs (what a waste of space those are)... my picture got all screwy and did sort of what you mention... but on other TV's it worked fine... I dunno?