RB6V technical help

Hello everyone. My Rainbow Six Vegas disc has been acting up lately. Whenever I put in the game,my 360 starts making a whirring sound,like it is having a hard time reading the disc. However, it does load the disc. When I get to the main menu, I always try to load one of the missions from the story mode. It gets about 75 percent done. then it starts making that noise again and comes up with the unreadable disc error. My disc does not work for multiplayer either.I have checked my disc, and have found no noticable scratches. I bought the game last December, so I think that any warranties that I may have had have expired. Can anybody give me any help or suggestions, because as of right now I have a 60 dollar paperweight on my hands.

This will sound very, very strange, but I SWEAR IT WORKS.

I was having the same problem with my copy of R6Vegas, and one of my friends told me to take some PLAIN TOOTHPASTE, smear it on the CD (the side the laser reads, not the top) and rinse it thoroughly with VERY HOT water. NOT BOILING WATER. Just the hot water from your kitchen or bathroom fucet. I wiped it off with a soft old tee shirt (cotton cloth) and it worked like a champ from there on out.

Good luck. I hope whatever you try it begins working again.