> What kind of oil? I use some low-viscosity mineral oil, like WD-40 or similar. Don't use to much of it, really only the scratches should be filled. Wiping the CD gently with a bit of oil on tissue paper usually works good. If you've taken to much, you can use ethanol (=denatured alcohol) to remove the oil, but do not use ethanol on the printed side! And, as I write about it, of course never wipe a CD or DVD in circles around the middle hole. Always wipe radial, from the center outwards. Greets, Kiste >>> Haha. It was indeed a scratch, a drop of oil on the DVD fixed the >>> "bug... > Well, yes, the oil fills the scratch and makes it almost invisible. I > don't know if it affects long-term stability of CDs or DVDs. It is however > a fit method to make a backup. > > Greets, > Kiste