The DVD burner I have now is a Lite-On of some sort, and it's great for archiving data. The problem is whenever I try to make a back-up of a DVD movie, the copy looks fine for the first half, and then it slowly gives video and sound errors, util my PS2 will refuse to play anymore. Has anyone else had this problem, and if so, was the DVD-/+R medium to blame, or was it the burner?