Possible Duplicate:
Can you disable rubber-band scrolling in OS X Lion?
I'm really frustrated with the way overscrolling works in Lion. It makes working with flexible web applications quite difficult.
Anyway is there a way to disable the over scroll?
Found in System Preferences => Genral
overflow: scrollandheight: 100%to disable the rubber-band-effect – bmike Oct 26 '11 at 19:19