An update to Counter-Strike: Source has been released. The update will be applied automatically when you restart Counter-Strike: Source. The major changes include:

• Fixed a client crash on exit (after connecting to a server using sv_pure)
  
• Added sv_namechange_cooldown_seconds, to throttle clients from changing their name too rapidly. (Defaults to 20 seconds)
  
• Added sv_netspike_on_reliable_snapshot_overflow to selectively enable the automatic dumping of netspike file if a client drops due to "reliable snapshot overflow" (defaults to 0, which disables the debugging)
  
• Added check to prevent player names from containing color codes
  
• setinfo console command will now reject attempts to set / change convars with any unusual characters
  
• Marked mem_force_flush as a cheat to prevent client exploits
  
• Fixed %n console crash in the client
  
• Updated client rate value to default to 30000 to improve network performance for most players
  • Rate was previously set by Steam’s Internet connection speed setting
• Updated client rate value to be stored in the config.cfg file
  
• Fixed a Linux dedicated server crash on exit