Hello, I got back to my MBP and its fans were spinning full speed. Thanks to menu meters I was able to see that my processor was maxed out. This is the second time that this has happened (last time I rebooted) and now am wondering how to prevent this in the future. Does anyone know what this/these program/programs is/are? Thank you very much EDIT: I just rebooted and unlike last time, the problem is still there. I checked my start-up items and there's nothing suspicious. Strange. EDIT2: These are powerpc processes, so they aren't part of the OS. I started manually forcing them to quit... and then they reappear as OpenScript.proc and seem to take as much of the CPU as they can. EDIT3: I tracked down the location on the disk and it appears that these are part of the system files.