If you’ve updated your Mac to Lion which was released yesterday, you might notice that the scrolling directions have changed. It’s all upside down now. Scrolling down goes up, scrolling up goes down. If you aren’t comfortable with these new gesture controls, here’s the fix.
Simply hit the “Setting” App, and navigate to “Trackpad” settings. Under Trackpad settings, go to the “Scroll and Zoom” bar and and untick “Scroll with finger direction”.
That’s it! The scrolling will now work in the right way. You might also wanna take John Gruber’s advice on this thing.
My number one Lion tip: No matter how wrong it feels, stick with the new trackpad scrolling direction. Give it a week.