By cache do you mean the game data? If not try deleting the game data, located in a folder somewhere above where your trophies are. Do not confuse it with saved game data, which is in a different file. You can delete game data and updates from that folder. Do so and reinstall the game and all the updates. If the cause of this problem is from a file corruption on your HDD, this should fix it.
I haven't had this type of problem, but God knows how many problems I've had to deal with. Because of that I've had far less fun than with Fallout 3 and haven't played it for a good year now. Maybe I will try again.
Before the PS3 everyone was nice to me :(








