Crysis frezzing

Ok i know there alot of threads about this prob im having ive read a few but nothing is working...

i got crysis on friday, and played for a bit and played most of saturday. i come to play it now and it goes to a black screen and freezes...

i can play for like 3min then it does that. it only started today as i landed on the ship after flying the Vtol, before that it was fine!

ive tried every setting from high to low and resolutions and it does the same thing im at a loss as what to do.

if any1 can help id appreciate it!

thank u in advanced.

System spec.

G31-s2l MoBo
Q6600 @ 2.4ghz
4gb ddr2 800
HD4870x2

all my drivers are up to date etc.

if you are on the aircraft carrier, then it is a memory leak AFAIK.

when playing use the r_displayinfo 1 command in console and look at your mem usage.

it should continually creep up until it reaches your max.

btw, are you running it in 32 bit or 64?