Every time when I drop to that well http://www.youtube.com/watch?v=C7JG_Bt2i7c&feature=related ( 6:51 ) my PS3 freezes, every single time! So I can't do that quest? Anyone else has this same problem?

That video link is walkthrough video. I wanted to be sure that I need to go down there. =(

Edit: I found this http://www.gamesas.com/topic/1364560-game-freeze-after-going-underwater/ and I try this. I hope that it helps. I come back to tell did that help.

EDIT II: That helped me and I can go forward. Thank you all! =D