Every single time i get in water and start swimming my game freezes, i noticed the trend and tested it out, it froze 4 times in a row, 4 tests 4 crashes, anybody else have this problem?

Many PS3 user's have had this problem. See here.... http://www.gamesas.com/topic/1364560-game-freeze-after-going-underwater/ On how to fix it. Hope this helped.