My wife's cat walked over her Macbook keyboard. Thereafter, when she uses the trackpad to try to move the cursor, the display moves in response, and the cursor sometimes moves, stutters, delays. Usually, both move. So my guess is the cat hit some odd combination of keys changing some preference. We could not find anything in System Preferences/trackpad, or searching the forums here (not that i know which words to use). Any suggestions, please?