chrashing chapter 3: going to refinery, help!!!

[niai]

my game is crashing every time when going to the refinery(at the red line above) similar to this (its booting back out to terminal and i have to reboot with ctrl+alt+del)
but disabling compiz didnt work the game has been fine part from the occasional slowdown and a weird pitcher in pitcher at the same place as the other thread

i have a inspiron 1545 with Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller
running ubuntu 10.4
game is from the humble indie bundle

can any one help me i really want to finish the game