Hey, I just got a refurbished macbook (2.2ghz, 1gb ram), restored from my old macbook pro's time machine backup, and I'm having issues with the trackpad. It's really jumpy, and get's stuck sometimes. I'm not sure if it's a hardware thing or a driver conflict... I've owned a macbook before (and a macbook pro) and it's never acted like this. I'm not pushing the system at all, and the problem is even here right after a reboot. Help?