Oh, the COD4 version wouldn't load, so I had to change its boot properties to make it load, and when the 1.6 patch came out, it came out for the disc version, but not the Digitally Distributed version, and I had to go into the properties, and change it from DD copy, to Non DD, then update, then change it back to DD.
And I bought and downloaded Frontlines through Steam when it first came out, and the Steam version couldn't play above medium graphics, for some reason, and the disc version could, so I uninstalled it, rented it for the Xbox 360, and a few days ago I reinstalled it, and now it's fixed, so.
Will this happen again?
I don't know.