I have a similar Problem with my LG 915FT+ My vid Card is an MSI GeForce 3 Ti200. I'm pretty sure this is caused by environmental Interference (since when I tried to demonstrate the problem at the place I bought it from, the problem was not there).
Try creating a small grid pattern (with white lines about 5-10 pixels apart on a black background) and set it to your windows background as tiled. On my computer the Horizontal lines were fine, but the vertical lines would form a wave pattern. Try adjusting your refresh rate up and down and watch what happens to the motion in the lines.
I noticed that at higher refresh rates, this effect becomes much less noticable. Lower resolutions are often run at higher refresh rates, so this may explain why you don't see it at the lower res.
Unfortuantly I haven't come up with a solution apart from adjusting the refresh rate high enough to the point where the distortion is barely noticable.
If anyone has another solution, I'd really like to hear it.
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Finagle's Law:
The perversity of the Universe tends towards a maximum.<P ID="edit"><FONT SIZE=-1><EM>Edited by Fat_Electron on 02/11/02 04:56 PM.</EM></FONT></P>