One week ago my burner was working properly and could read and burn a dvd in under 1.5 hrs. Somthing has happened because now it takes over 3 hrs to burn a movie with little to no compression. I use dvdxcopy platinum and clonedvd2 and both have the same problem. It takes about 1 hr to read the movie and over 2 to write. I already checked my dma and both are set to dma. any suggestions?