Its funny cause my friend told me he played Uncharted 2, and it messed up his PS3 after he beat it at the ending credits, but either way i had to play the game myself... The game froze on me once or twice while i was playing, i finally beat it and i didnt come across the problem my friend did...

I go back to playing MW2, and once im done playing with certain matches, the PS3 would freeze on the score board, and had to switch it off the back many times... That message pops up on the PS3 saying it turned off unproperly and this and that etc etc. After switching on my system, it wouldnt read MW2 and Error Message ( with lots of numbers ) appeared.

Yesterday and the day before that, the PS3 has had difficulty readin discs like Assassins Creed, AC II. Yesterday me and bro opened up the system, and carefully cleaned the BlueRay lense figuring it was dust. Today I played ACII and it was working, but MW2 still seems to have the same problem...

Im wondering if it is because me and bro turned off the system the wrong way so many times that its damaged the system, or because its one of the first models and the games are too much for our ol' PS3. Should I give the PS3 a break or is it MW2 thats the problem?

I dont wanna break the PS3 cause i wanna play Final Fantasy XIII and God of War III, can anyone help us out in this one?