ShotGlockMF

So i've been having a problem where my game just kinda locks up and says "REceiving...". I tried a few things, stopped using addons, -maxmem=all kinds of different numbers. Turned graphics options on and off, like memory and post process effects etc. Tried windowed mode, tried -cpucount= 1,2,3, and 4. Tried editing the .cfg file. Does anyone know if they're actually working on this or is there any fix i have yet to discover?

So i play for around 15-20 minutes on the mission where i have to find the russian traitor, and i get that message "Cannot Comit" or something along those lines, or it just freezes and i reset. I've tried with high settings, low settings windowed mode etc. I really don't understand whats going on! Could anyone explain? System Speccs: Quad Core 2.6 GHZ 4GB DDR2 Ram. 8800GT nVidia I downloaded it from steam... Just crashed again while i was trying to catch the bad guy.