I had about 90 minutes of movie in the timeline. I the create disc menu I did choose DVD 4.7GB and High quality. PD9 indicated this will use about 4.4GB space on my DVD. Very strange. Normally I can only put about 65 minutes movie on a 4.7GB disc. But when I tried to burn the disc, I got burning error. First I was not sure if a had a bad disc. So I buned the DVD to a folder. After I tried to burn this folder to a disc with Imgburn. What a surprise: The size of the produced folder was more than 5GB. And not 4.4 GB what was indicated by PD9. I think, this has to be a bug or something. I will try again with the smart fit option just to see what happens. Is this problem already known?