Same xD but yes, alot of games seem to have this problem, i had the same problem with my Oblivion disks for both PC and PS3... I just losely put them in the box or put them somewhere else/in a plastic sheet.

RDR, Oblivion and my 1st copy of skyrim did this, I bought a sleve to put it in, my new disc hasn't seen the inside of the case since the day I bought it. I had put the insurance that the seller offered on the disk....best $6 I've ever spent. Cost me another $6 for the insurance on the new disc that's it

this happend to my first morrowind game then one day i was wiping it with my shirt and it cracked all the way through the disc

Download it to your hard drive and it'll be fine, the game runs for like a minute or two to verify you actually own it, then it stops spinning and plays from the download.