Opengl problem under xp64

Hi
I have a weird opengl glitch under xp64, BL 2.48. What happens is that I get a half a second(or little less) negative colors in 3d view under edit mode. My other opengl apps do not seem to show similar glitches.

Any ideas?

What graphics card are you using?

Sorry that was totally sloppy post. Here are the details

windows xp64, intel quad, 8gb ram, Nvidia 8800gt