My ofp has started to freeze lately  when it locks i get looping sound   i have a  sb live 4.1 sound card  1.33 ghz athlon  512 sd ram  geforce 3 ti 500 win xp pro.  It did it a while ago but i updated my bios on my motherboard and it stoped it but now it has started again. All my other games play fine this is the only one that locks.