For those of you who have an Apple Mouse (used to be called ‘Mighty Mouse’), after a few months of use, you’ve probably had the trackball get stuck.
I seem to recall that this tip was actually the ‘Apple Recommended’ fix for the problem.
Hold the mouse upside down and roll the trackball around a few times. May sound simplistic, but it’?s worked many time for me.
As with any trackball type mouse, debris build at the roller contact points. My guess is this frees it up.
Where it goes…no idea.