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

• Made stats reporting less verbose in an effort to reduce server hitches at round end
  
• Added a server convar "sv_noroundstats" for server admin to turn off stats reporting if the server is hitching at round end. This shouldn't be necessary since the stats have been made less verbose