Mouse Calibration
 

Got this from a college electrical engineering classmate:

Is your mouse calibrated? You should do this every few days, more often if you spend a lot of time on computer.

I was shocked to see that this works!

To re-calibrate your mouse (or trackpad), click and hold on the S below. Then drag the S toward the g. If it doesn't work, you might want to clean your mouse.

Some people will believe anything