VALVe have recently released another update for steam fixing some problems with the new Terrorist model and also the "midget" bug which appeared around the time De_Inferno and De_Port were released.
"An update to Counter-Strike: Source has been released. The update will be applied automatically when your Steam client is restarted. The specific changes include:
Counter-Strike: Source
* Fixed model scale problem resulting in under-sized players
* Fixed model's feet sliding while running
* Made the new Terrorist model leaner"
As per usual, just restart Steam and open Counter-Strike: Source to get things updated.










