YESS!!! I see this too. It's not just "kind of" annoying for me. I can't stand it. I would rather forget about flash and use 2.1 than have to deal with flickering!! Anyone else notice this? I particularly see it when scrolling through the setting menus more so than the browser.
It is bothering me now more than ever. I hope it is software related and not like the screen issues that were had with the first update which were hardware. I see it with any fast scrolling on any page.
I also just now noticed that if you go to a site like google news and lay the droid x in "landscape mode" that when you scroll that same band shows up in the form of that part of the screen lagging behind the rest of the screen. So when scrolling the page now looks disjointed and you can see that part of the screen is now lower or higher than the other part of the screen depending on the scroll direction. I apologize to anyone that didn't notice this until this post!
I actually noticed this in v2.1... It looked like the right side of the screen's text couldn't keep up with the left side text when scrolling. I still see that as well in 2.2... What I was referring to earlier was something a little different. It is more noticable in the setting menus. Give scrolling a try in the setting menus and see if you notice any "sketchy" text about 2/3 the way down the screen...