Updates to Counter-Strike: Source have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

Counter-Strike: Source

• Fixed performance issues and memory leaks related to scoreboard display.
  
• Fixed long-standing bug in which a player would see another player in a grenade-throwing animation when they no longer had a grenade as their active weapon.
  
• Fixed animation problem (“crab walk” caused by aborting bomb plant by using the drop command.
  
• Fixed several ragdoll animation problems related to cl_minmodels.
  
• Fixed several crashes that could be caused by user modified .res files.
  
• Run sounds are no longer heard from players walking with the Scout equipped.
  
• Player’s last match stats will no longer be updated if the player did not actually participate in the match (e.g. only spectated).
  
• Flagged bot_mimic and bot_flipout as CHEAT vars.
  
• Fixed “Cold War” achievement so that it now requires the correct number of opposing players.
  
• Fixed hud_showtargetid; added hud_showtargetpos for setting the on-screen location of the targeted.
  
• Fixed bug in which the client camera would jump to another player if the player died when mp_fadetoblack is enabled.
  
• Removed extraneous/incorrect help text for nightvision goggles.
  
• Fixed bug in which the spectator UI would disappear after a mode switch or similar renderer change.
  
• Changed the size of the bomb icon on the spectator UI