I'm just doing some spring cleaning of my PS3 game data files to make some space and noticed that apart from the DLC data file I have two large Fallout 3 game data files. One is 6701 MB with no version number and the other is 4312 MB with version number 1.61. Surely the game doesn't need an 11 gigabyte installation? Can someone explain what those files are and whether or not I can safely delete one of them?