Microsoft has admitted there's a problem with Halo 3's Limited Edition packaging scratching game discs, and is now offering replacements via the Xbox website.
The problem is blamed on the plastic and foam nub in the LE tin designed to hold the discs; it turns out plenty of gamers - including CVG - are opening their copies of Halo to find the discs loose and scratched.
Microsoft's replacement program lets those unfortunate few download and complete a form to get a working copy for free, with a minimum wait of two weeks. Other games are covered by the program, but you'll have to pay £10 for anything that isn't Halo.