btw, i would really like people to discuss more on tactics during the game via the headset. That would be really cool! planning an attack is much better then just everyone for himself flying racing or running towards checkpoints to conquer!
Make sure that both your playstation and PC (where the proxy server runs) can access the internet. Only put in the proxy server in the PS3 configuration, leave the rest default (or fixed) so that you can access the internet. (i had the same error code, got it solved this way)