Is it possible for dvdr media to cause a laser to be damaged? Possibly giving off fumes or something? I have two players. One had been having difficulty playing discs, both premade and homemade, freezing, stalling or whatever it's called. I had cleaned the laser a couple of times and it worked better for a while, then acted up again. Then I started using the other and after a short time it started acting up in the same way. I wonder if one of the various brands of dvd-+r I used was ruining the lasers. Anyone ever experience this?