Lag? I haven't seen much of any lag lately. And apparently it's about to get better. From other places I've read this morning, people are saying that EA is killing stat tracking by 3rd parties. There were a lot of sites that were querying the stat server constantly, which was slowing everything down, including Gamespy. They're going to block all of that, which should improve things overall.
I played for 4 hours last nite and I don't think I saw much lag at all. Make sure you're getting on a Ranked server, or even an EA server.