I recently picked up a Black MacBook 
for cheap. It had a fresh install of Snow Leopard when I got it. I went ahead and put Lion over SL for my fiancee. Everything works great, except for scrolling. On my MBP and previous MB I could just flick my fingers and it scrolls very smoothly. On this BMB it just scoots down a little bit then stops, when I flick my fingers. I do have smooth scrolling enabled.
Do I need to do a clean install of Lion?
for cheap. It had a fresh install of Snow Leopard when I got it. I went ahead and put Lion over SL for my fiancee. Everything works great, except for scrolling. On my MBP and previous MB I could just flick my fingers and it scrolls very smoothly. On this BMB it just scoots down a little bit then stops, when I flick my fingers. I do have smooth scrolling enabled. Do I need to do a clean install of Lion?