Comment 26 for bug 460363

It appears that netbook launcher is simply dividing the distance it needs to scroll by a certain number of scroll wheel clicks; you need to scroll the same amount to reach the bottom of the page. For some pages, this makes it really slow. For others (like System) it means scrolling is really fast, and jumps in huge increments.

All that needs to be done is set a constant offset for each scroll click instead of having this amount be a fraction of the entire page.