Hi, I have two ibook G4 late 2005. I rarely use the second one's CD-Drive. I used the others some time ago and I remember that it always sounded like a loud fan on full speed (actual case fan was off). Now I had both running and recognized that the second's ibook CD-Drive is very quiet, except it has a chirping sound that stops, if I hold my hand above the keyboard (not touching it). Both are the same Modell: MATSHITACD-RW CW-8124 Version: DB0D (both!) 1. What is the normal sound of a late ibook G4s optical drive (especially that make) 2. any ideas about the chirping? 3. can you recommend a quiet one? Thanks a lot!