Having trouble with the CD/RW drive in my 700mHz eMac. Problem is that some game discs are read, and some are not recognized. In the past I thought it was related to dust,and a sensitive drive, and had success using an Endust lens cleaning disc. Given that the problem exists with some discs and not all is it possible that an I-Tunes update is the source of my trouble? Currently running OS 10.1.5, and don't really want to bother with a system re-install. The drive is not heavily used, and neither are the discs, so the cleaning routine, though effective, has never felt like the true solution. Appreciate any insight.