Arma 2 Freeze in Razor Two

[orangeman 10]

I'm playing the campaign and once I get near this enemy camp, it freezes. There's still game sounds, but nothing else works. I have to use ctrl+alt+del to get out. I've used the search bar and found similar problems, but no solution.

I'm using patch 1.04 and my specs are:

GTX 260 (Latest drivers)

e7300

4gb DDR2

Vista 64

[orangeman 10]

Nobody knows? :(