My Apple Magic Trackpad has started to move the pointer on the screen with a jerky and jumpy way, that makes it difficult to use it (compared with the macbook pro mid 2010 17inch touchpad). How can I fix it, and why it appeared so suddenly? My operating system is Mac OS Mountain Lion. Thank you.
It seems that new Alkaline Batteries may do the trick.I was disappointed because after the replacement of the batteries the problem remained. But I see that after some time the trackpad returned to its previous good performance!