I need help fast. A bit over a week ago, my macbook pro started acting up a bit. The mouse would be uncontrollable at times and it would switch between desktops randomly. It would always be fixed if I restarted it, so i just ignored it and quickly restarted the computer if it happened (every couple days). Today it started happening more often. I've restarted it a few times and updated all my software. It's randomly looking up/defining words as i type this. It just zoomed in on the text box as if i double tapped with two fingers. It also switched to my dashboard just now for no apparent reason, I'm not touching the trackpad. There's no external mouse connected and no one around here that's smart enough to be playing a prank with an external mouse or trackpad (but that's really what it seems like). This issue is making my only computer almost unusable! Please help, anything is appreciated. Thanks! Edit, more info: 10.8.3 Mid 2010 15" MBP 2.4 i5/4GB/320GB It all started after I downloaded a file online. It was a popular torrent and I haven't had any bad experiences with torrents in the past. I've deleted the file and it made no difference. May or may not be a total coincidence.