I'm not sure if anyone else is experiencing this issue. I did Google it and found one or two posts on other sites but not much. When in Safari, if you scroll horizontally or vertically and the inertia is still carrying, you can not change the direction of the scroll until it has completely stopped. I know this exists on the 3GS but it is not as sensitive. It's driving me crazy! I don't know why Apple would change this from 3.X to 4.X. I find myself CONSTANTLY swipping the screen over and over until it responds. It does not do this when view photos. And, as an aside, I'm wondering if/when the Jailbreak comes out that there is some way of adjusting the parameters in the script that dictates scrolling rules.