RESIDENT EVIL 4 DOESN'T WORK ANYMORE

Ok, this is driving me crazy.
I am playing Resident Evil 4 and I am near the end.
It won't work anymore, it gets stuck on the cinematics and I am really annoyed.
So I thought it was the disc and I got another Resident Evil 4 disc but guess what? It still does the same thing, it gets stuck on the cinematics. The first disc that I used was used before by someone else that finished the game without problems.
So...I thought it was the playstation 2 even if it has only a month of life.
So I took it back to the shop and they gave me a new playstation 2 without any problem.
Guess what? It still get stuck.
So my last chance is that the memory card is broken, what do you think? But why now and not before? I mean...I have been using the same memory card for all of the game and I am near the end of the game.
Any suggestions?
Thank you.

Additional Details
I tried 2 different discs for Resident Evil 4
I tried 2 different playstation2

It gets stuck means it doesn't go any further, yes basically it freezes on EVERY cinematic of the game.
I tried to pass the data to another memory card, but I had the same problem.
Nevermind, I started it all over again.
I am using another playstation2, another Resident Evil 4 disc and another memorycard. If I am going to have the same problem maybe there is a poltergeist in my house.

and now that u restarted did it work...maybe i shuld do that since i'm barely on mission 2

i had this problem with a different game all i had to do was shake the PS2 while it was playing. but that only works if the disc is skipping

try dwnloading a crack for the program and play it without the disc it worked for me