I haven't encountered a lot of lagging problems and it seems like a lot of those GOW2 glitches were fixed after the 2nd and 3rd title update. The biggest and most annoying problem I've seen is being suddenly dropped out of the game b/c of a network choke. My 360 is hard wired into a wireless N router and my laptop never drops its connection. But every 4th or 5thgame of Horde, I'll be on wave 15 and it'll just kick me out! It's unbelievably frustrating! And I hate when we've got a great game going, and between rounds, you'll notice that you're down one or two guys, which makes it so much harder. I thought that title updat3 was supposed to make it so that if someone left the game, it would put a bot in to fight with you - but it doesn't work on Horde. That seems like a no brainer if they can't fix the network issues.