1) I think you can pay for the extra warranty
2) Open up the system, take out the dvd drive, open up the drive, and remove the 'crap' that has built up around the moving parts (laster, moving track thing, etc). I did that to one of my systems and it's been working fine since. Same problem. The issue is one of the brands of disc drive has 'crap' build up inside of the dvd drive.
Opening will, of course, void the warranty. Removing option 1.