I've been using my 530 for serveral weeks now very well. Not one single problem and all of the sudden it had a major change in speed performance. I use auto shrink to do it all. It used to analize the disk and decrypt it very quickly. but now it takes over an hour just to decode it because it only performs at 1x. It also only burns now at 1x. Please help. I have windows xp and using 1d firmware. I'm using dvd+r's so the firmware update shouldn't be an issue. I was originally burning them at 4x speed because it would produce much better results that way. Also, when I go to the device manager it won't use the dma option, always defaults back to the other option. I do have another cd burner installed but it was there before when everything was good.