Steam plain sucks... I've had real problems since October of 2006, when steam did a graphics update (or something), and now in every game, I get lad. I'll be playing there and, in the middle of a game, it will just freeze (the graphics, not me) for about three seconds... Once it's done with that, the graphics will update to where I actually am, and my player will lag in that spot for half a second. Gets really annoying... I've had support tickets going since Oct, 2006, but they don't care to fix a major problem if it's only effecting about 5% of the users.