anyone been having trouble with the game? first night i played it froze my ps3 by the third mission. since then its froze a few other times. and lately everytime i try to play the game and it gets to where its loading the last save it just keeps saying the little loading - "mission" message then eventually the music from the initial load cuts off an it just sits there with a black screen sayings its loaing. takes me 3 times (turning ps3 off and retrying) to get it to work sometimes. its doing it now, on my second try. could it be i have to much music on my ps3's hard drive or something? i havent heard of anyone else with this prob