Hey guys, I'm having some weird screen tearing when I scroll via the trackpad (two fingers). It does not occur if I scroll with the up/down arrows. This occurs in all windows, including safari, mail, itunes, any windows that scroll. I have attached a picture to show what I mean. This only resolves itself after a reboot. I had this happen a few days ago, rebooted and have been fine since, until now. I have no idea why. Does not help if I quit out of Safari and start in it either, so some process is causing it I believe.