hello well i have a mad dog megastor 6-in-1 dual layer 8x dvd+r+RW. iv had it about a year now its worked fine till now. its still under warrenty but im just seeing if it might be a problem that i did or something. well my problem is when ever i try to burn a dvd video file in nero or dvd santa or any other program i get a error. i get this when trying to burn a dvd video from nero "Could not perform start of disc-at-once" then it says Burn process failed at 2.4x. ive tryed all diffrent speeds i still get the same error. i thought it might be the file so ive tryed other movies and it does the same thing. i have no problem reading discs or burn normal cd-rs or cd-rws i just cant burn any type of dvd. some one told me its the dvds im using so i looked at maddogs website and bought the ones it said to use and it still doesnt work. i get the error like 10 seconds after i click burn so any help would be appreciated!!!