I have a Flat Panel iMac--OS 10.2.8 and an iBook (same version OS) and for some reason I am not able to burn CD's on either one. I have been able to do this in the past, but now I am getting an error "Sorry the operation could not be completed because an unexpected error occurred (Error Code 6)". I am trying to copy JPG files to the CD... I have tried text files, I've even tried to copy music with iTunes, nothing seems to work. I tried using SONY CD-R 700mb and SONY CD-RW 700mb. This has never been a problem before and for some reason it's happening on both of my computers (they're not networked, they're totally stand alone systems). I copy the files by dragging them onto the CD... it asks me if I want to Burn the CD, I use the Burn Speed "Maximum" then select BURN... It goes through the PREPARING DATA step... then it starts to say BURNING DATA.. and quickly changes to VERIFYING then the CD pops out and I get the error. I have also tried copying the photos to the CD via iPhoto and have the same trouble. I get a different msg with iTunes-- "The device drained its buffer without burn underrun protection". If anyone has any ideas PLEASE HELP! Thank you.