So I've been burning off a bunch of DVD-Rs and CD-Rs today on my rev-c 12in Powerbook. My drive beeps twice when I put in a blank DVD, and beeps again when I start to burn if (using Toast). Is this normal? I can't say I've ever read about this before. (Maybe terrorists have infiltrated my DVD-R drive, and are planning on attacking my 12in Powerbook. The humanity! I'm quite sure theres a link between the two)