I bought the game maybe two weeks ago and I've only had time to play two or three times. I had just flashed my headlights to start a race. I heard a voice say the police were too close and to meet me at the start of the race. At which point the game locked the PS3 up solid. I had to hold down the power button on the machine to shut it down. The 'P' button on the controller didn't work. Is this typical of MC: LA or just a one off? Thanks