I have a MacBook Pro, and every time I try to burn a cd, I get a media writing error. I have dropped the writing speed down to 2x, and that does not solve the problem. I know it is not the cds I am using because the computer was burning to them many of times before. I have tested the cd player to know that still works. I have also tried cleaning the cd laser player too. Is there an Itunes update that is possibly not compatible with the MacBook Pro and causing this problem? Anyone with any ideas would be great.