I was playing Ratchet & Clank with my friends, and one of their feet caught a wire and jerked my ps2. WE kept playing, and when they left, I tried to play single player. Only thing is, it said there was no save data, enen though I was halfway through. I tried to save, but it wouldn't let me. I went to browser, and the data was there, next to some corrupted data. I tried several times, and I couldn't delete it. I tried another game, and it worked fine. I have a 16 mb Max memory card.