"This update is for...PowerBook computers with an internal slot-loading Combo drive...installs new firmware...prevents Combo drives from intermittently failing to eject discs. It's recommended that you install this update to ensure that your Combo drive avoids this problem. " http://docs.info.apple.com/article.html?artnum=120212 It seems this applies to many of our Powerbook G4s. I don't use my CD-ROM much. Anyone want to try it? Jerry