i had the same problem that many of u have with the connection on crysis multiplayer.i fixed my problem by restoring my ps3.im not saying that this is 100% sure but i did it and my ps3 and my connection is much better now. tell me if i helped

What do you mean by restore?

Probably rebuild database from the PS3 options.

I wouldn't do it though. No way this is what resolved his problems, just coincidence.