Black Ops is glitched on my PS3?

Help! My Black Ops is glitched! The campaign dialogue isn't working until i play a little bit into the game. And it repeats the same thing. same thing with the guns. My gun turns invisible, but i can shoot it though. The music also does a continuous loop then stops when playing. In zombies, Dead Ops works fine. Five is glitched. When my guy is supposed to talk, he doesn't talk until into play into the game and it repeats the same thing. Eventually it stops, but like 15 minutes later! There are lots of colorful boxes all over the table at the spawn to. And In Kino Der Toten, the game freezes about when Richthofen says "But i digress" on the loading screen. The game freezes for a moment, then Richthofen Continues talking and when hes done talking, the game completely freezes. I have to take out the disk or restart the game to do anything else. also, during the time of the short freeze when Richthofen stops talking for like 2 seconds, the spinning Call of Duty and Treyarch spinning thing stops to. The orange light under the ps3 disk slot also stops blinking (its supposed to blink when the ps3 is loading stuff) Some times it takes 3 minutes for multi player to load when it spoused to take like 15 seconds. Please help! Anything to make Kino playable again will be great. By the way, the disk has only 1 tiny scratch and is spotless.