Yesterday’s “Halo 3” news was about scratched disks, todays news seems to be more of bad news that there may be a large batch of “Halo 3” games out there that may not work.
According to some owners on the xbox.com forums, owners of the game are encountering “Disk read error” messages during single player campaign and multiplayer.
If you are experiencing this problem, please visit the official XBOX forum