I've been unable to burn any DVDs on my aluminum MacBook with Toast 9 or Popcorn 3. I was worried that it was the SuperDrive. I tried burning with Disco and it has worked fine. It just hangs on "Preparing" and locks up. Is anyone else having the same issue? I've read on the Roxio forums that some people think that it's because it's a SATA drive in the new MacBook.