I need more info before i can answer this corectly, however, i can give you some leads.
1) Did you buy cheap cdrs?
2) How old is the drive? I had the same error on a drive which was about 4 years old. Basically, i burned it up. It couldn't keep a steady power ouput to the laser, therefore would never work accurately.
Ep, glad to see you come back and tidy up...did want to ask a one day favor, I want to enhance my resume , was hoping you could make me administrator for a day, if so, take me right off since I won't be here to do anything, and don't know the slightest about the board, but it would be nice putting "served administrator osnn", if can do, THANKS