When ever I start up my Mac it gets to the desktop and the DVD drive starts spinning up, it is a good 10 to 20 minutes before it loads the rest of the desktop and the CD, during that time my computer acts frozen, except I can move the mouse around. Same happens when I stick in a CD after it has already booted up, it sits thre for 10 to 20 minutes before it reads the CD and lets me do anything. The DVD drive is the one that came with the comp more than 4 years ago. The specs are a 400MHZ G4, 384MB and OS 9.1. This problem started only recently.