sorry, but I wonder what is the problem that has mob of the dead on ps3 as it enters the intro, it freezes and does not let the menu from the ps button and the only way to get the screen is turning off the ps3, help for Please
You can try to delete your Game Data Utility.
If the issue persists, try your disc on another console and check it's the same with the other console.
Best of luck!
Retrieving data ...