Since I'v been using Win7 , I'v been having trouble with Alt+Tabbing during games
Say I alt+tab to my desktop while playing TF2,it can take up to a
whole minute before it goes back to my game

Its really frustrating when playing games that requires your constant presence (HoN/DotA/LoL,FPS,etc.)
I have 4G of RAM,so it should be plenty enough for run a game + browser + MSN
Any of you guys the same problem and found a solution?
-Ex