Can someone please help me, I don't know what I am doing wrong. I have successfully burned several movies but also some movies that I burn lock up after a period of anywhere from 7-15minutes in. The movie plays fine up to that point and then just locks up. I have a sony dvd player (dvp nc-655p). I've tried 2 different burners and also different speeds. The movie plays fine with WinDVD on computer. Any suggesstions???

Thanks,
Virusgt