(adsbygoogle = window.adsbygoogle || []).push({}); i get this error when i test the game
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i can start the game but if i start mp, spec ops or campaign my ps3 freezes, help pls

It almost looks like it's your MW2 disc. dev_bdvd is the root of your disc so that means the disc is corrupt. Try one of your friends discs and see if it works. If it does, then its your disc.