I have this problem with the Kenwood 52x with reading some CD's. I backed up a disc perfectly and it reads it as a Audio disc? My Memorex 32x reads it fine but some discs it just refuses to read for the kenwood. My friend has this kind of problem too but with a Memorex 36x or was it 38x. My friends CD-rom would not read the CD's and just keep on trying to read it over and over again. My 32x Memorex it fine but his has a problem. Does CD-Roms at higher speeds have problems?