I need some help here, I bought a second hand ps3 from a LYN forumer, its a 60gb version, this morning when i was playing MGS4, it hangs halfway, so I remove the disc and restart the system. But when i turn it back on it says that the data is corrupted so the ps3 did a restore automatically, after tat it says the harddisk is rebuilt or sumthing like tat, then after tat everytime I wanna startup my games it hangs halfway when the game starting up or some games say that I need to delete game data because game data is corrupted, HELP!!!