my super drive makes a lot of noise when coming out of sleep mode or booting up 30% of the time it makes one noise, and the rest of the time it makes 3 consecutive noises? Also the other day I tried to burn a CD for a friend and the CD would not go in, there was something physically stopping me from putting the CD in rebooted twice and tried no luck, I go home and try it and it works??? (at home it was plugged in, but surely this wasn't designed to only burn things when plugged in.) What is the deal with the superdrive?