See the following...http://forums.cnet.com/5208-13973_102-0.html?forumID=146&threadID=301900&messageID=2816069
I have a ln46A650, and was wandering why, when I hit the info button it brings up the time, but also brings up 1080i at 60 Hz. The TV is 120 Hz so I don't know if it is putting out 120 Hz or 60 Hz. I bought a cheap hdmi cable for 20$ or so since i've read that you don't need an expensive one to use. Is this problem something I need to change in my settings on the TV, or maybe the cable..or niether?

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