I have been using my burner for some time now (1+ years) and in the last 3 weeks it has gone from consistently burning my 4x Arita media at 8x to now 1x. I have checked the DMA setting and its ok. I think the problem started when I upgraded my firmware from 1.09 to 1.11. After this, (I think so), my burner dropped to only burning at 1x and with the same media (bunch of DVDs) that I had always used. Should I try and change back to 1.09? Is that possible? Any other suggestions of things I should look at?