gregpod9,
Of all the things I've seen said about the A650 series, I haven't seen anything regarding lag time. I'm not sure why that would be happening. Game Mode would have been my suggestion, but you also may want to calibrate your gameplay in the game console (if applicable). Many games do have calibration adjustments for this purpose.
If that doesn't help, you might want to check or update to the latest firmware.
Keep me posted.
--HDTech
I purchased the LN46A650 10 days ago and the picture quality is excellent on it. Playing games on this tv has horrible input lag which makes games like Halo 3 and Call of Duty 4 unplayable. Is there a fix or an upcoming firmware update to fix the lag in games? I tried game mode on this tv and its overly bright and has too much contrast that effects the picture and most of the picture controls are disabled to change the picture settings.

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