When I take a dvd out of my BTC 8x? DVD-ROM drive, the dvd looks like it has alot of smudges on it and some scratches. I had that one of my dvds and I thought I just mishandled it since its old and I put it back and when I opened it up again, those smudge like marks were gone...could it be possibly moisture or from the heat? I know i didnt cause it with my hands because I took a new dvd out of my drive which I left in there for a week or so and it had all these weird smudges and dust and minor scratches on it. Has anyone heard of this before? What can I do short of replacing my dvd-rom drive...its a POS no name brand i got for free from my friend.