I got a Lite on ltr 52327S and a NEC 1300A burners, and i have been burning hundreds of the same cd throughout the past week. All of a sudden, the burning program (both alcohol 120 and nero) says it cannt complete the burning on either burner because the medium may have changed?? The only thing i have changed was some startup options in msconfig, which i know would not affect it. I looked for firmware and or drivers and found none. I dont know why it would do this, and i really need to finish these cds.