I just purchased a plextor px-708A. Using any dvd+r and dvd+rw media the 708A has performed flawlessly. However, when I try dvd-r media I always get the same error message..."CD burning failed during the burning step". The error comes up almost immediately. I have used 2x TDK (which is recommended by plextor) and Imation. Tech support at plextor has been useless. Can anyone suggest anything or guide me in the right direction? Thanks in advance.