COD4 MP newbie: Help with PB issues

I just bought COD4 and started multiplayer.... 30 second in to any game, I get kicked by Punkbuster because (No packet Flow" or PB init. failed.....

I'm no punk, why are they bustin on me? I even enabled it in the options menu.

Did it! Works great, awesome game. I got a 5 kill streak in my first game! Newbie-friendly indeed :)

I'm not going to patch it just yet because of all the v1.4 horror stories though.