Ok, so I know the drill, HL2 has an old stuttering problem, but here is the deal. Since the Steam update HL2 stutters on both my main system and my Alienware Laptop. Main system used to run it smooth as silk. Laptop is new. Main system is running 6800gt, laptop running 6800 go Ultra. It is really aggrivating. Steam has a post about it, but no dice. I have tried different drivers and no improvement. Anyone have suggestions??