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September 8, 2010 - Valve

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: Source Engine Changes (CS:S, DoD:S, TF2)

• 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.