I call it more of a flicker, but I also experience this issue with a MBP (led backlight). It is not browser dependant, but as Safari scrolls smoothly, it is much more apparent with this than other browsers.
Here is a perfect example, watch the sidebars on this page while scrolling :
http://www.theautochannel.com
It's also particularly bad with this site (apple discussion board), and others with high contrast text, the text flickers/ripples very badly This never happened with my Powerbook display. Is this an issue or simply inherent with these displays. Personally, it is giving me headaches when scrolling through large amounts of text (which I often do for work), and rendering this laptop virtually unusable for me.
I'm surprised to find very few others complaining about this phenomenon, perhaps I'm not describing the issue well with my search terms. Has anyone heard of a solution?
Thanks