Its a ram issue on the iPad2. Because Apple wanted to hit the price point of $499, they decided to skimp on the ram. They weren't going to skimp on the screen or the overall SoC. Because they cheaped out on the ram, you have to always keep in mind what is running in the background and how many tabs you have open currently in the browser. Believe me, if you are having issues with safari, you are not going to be happier with Atomic or one of the other third party browsers. These browsers add features, not smoothness.