Disabled clients loading server plug-ins unless the plug-ins are signed by Steam or the client is running in insecure mode.



Added a checkbox to the Options->Audio dialog to control muting the audio when the game window is in the background.



Fixed crash in custom maps using the trigger_camera entity.



Fixed another bug in the Steamworks internal stats reporting.



Updated the localization files.



Updates to Team Fortress 2, Counter-Strike: Source and Day of Defeat: Source have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include: