I have a 15" PowerBook G4, 1.5 GHz processor, 512MB memory, and a CD-RW/DVD-RW SuperDrive. My question: why does Apple put Matshita drives in? These apparently have almost no recognition capabilities. I bought Sony CD-RWs and they were not recognized; I had to get TDK. Now I have Maxell DVD-R discs and they are not recognized. Can anyone tell me why this is, and what I can or should do to remedy the problem (eg. new drive)?