Following a number of reports that Halo 3 Limited Edition game discs were being scratched due to defective packaging, Microsoft has added the Halo 3 LE disc and and Essentials disc to its disc replacement program.
Under normal circumstances the disc replacement program charges a $20 fee to replace a disc, but since the issue with Halo 3 was a manufacturing problem, Microsoft will replace both discs free of charge until December 31.
To get your game disc replaced, head on over to Xbox.com and fill out the PDF form.