For the last week or so, my mouse cursor has been constantly clicking everything it moves over. This happens both when I'm using my magic trackpad and when I use my dell wired mouse (long story), and it doesn't happen when I boot into windows 7. I'm unable to type into text fields because I keep 'clicking out,' to watch videos full screen, or to really do anything. It's functionally crippling. I've already cleared the PRAM, and that didn't help. I didn't install any new software (or hardware, for that matter) before it started, and I updated everything immediately after I noticed it. Any advice for how to get things back into working order? Thanks in advance.