I have recently purchased a 12x Samsung TS-H542A DVD Burner in an external case. It takes me a good 1 & 1/2 to both read and and another 1 & 1/2 to write a full DVD. Browsing through a lot of the threads here with similar problems I've come to the conclusion that it's to do with the DMA. My CD-Rom & CD-Burner both have DMA on status, but the DVD Burner doesn't list DMA at all. Knowing nothing at all about DMA and how to configure it, can anyone give me some advice on how to do this? Any help (in layman's terms where possible) would be gratefully appreciated! Thanks.