NowGamer: "Do you get angry at Call Of Duty? Do you swear when your favourite weapon doesn't work as expected? Does it make you go to the developers and give them unnecessary hassle?
Firstly, calm down.
Secondly, there is a reason for that. Though most changes to Call Of Duty come via a title update - a separate patch that tweaks a number of in-games stats and mechanics - Mark Rubin reveals that many changes are made without anyone ever knowing."