Horizontal Lines During Gaming On New Plasma, new 32" plasma showing horizontal lines in games when panning vie Options

[katzbalger]

I got a new 32" Insignia Plasma(had no idea they were making plasmas that size now) for christmas, and I'm blown away with the picture quality, but when playing games on my 360Elite, I have noticed one little nagging thing that is getting to me.

When panning the view up and down in games like FarCry2 and Fallout 3(only games I've really run on it so far) I notice horizontal lines, almost like scan lines - just visible across the screen, especially across things like vegetation. Panning left and right does not produce a similar effect. I'm running through the supplied HDMI cable, at 720p. It's not a big issue really, but it's a bit of an annoyance given the outstanding picture quality otherwise. I can live with it, but if I can make it go away, I would really like to.

Any ideas?