So I have an external hard drive hooked up to my MBP via USB. I've noticed that every now and then (maybe every half hour or hour?) the drive spins up. It's actually really annoying, as the drive makes a loud sound as it spins up. I can't figure out why it does this; the drive spins up and then goes back idle. Time machine is DISABLED, spotlight index on the drive is DISABLED as well. I use the drive solely for storing movies/music. There are NO applications installed on it. The only apps I have open are finder/preview/safari/firefox/adium/itunes. My guess is that some process is trying to access the drive for whatever reason now and then. Does anyone know what might be the culprit? Help is appreciated.