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

Counter-Strike: Source Beta
Fixed players not being able to buy smoke grenades
Fixed case where releasing the fire button on AWP is ignored and the player needs to press fire twice
Fixed DX8 crash
Get the full article at store.steampowered.com

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

Counter-Strike: Source Beta
Weapons now have separate penalties for jumping and landing, allowing better weapon control after landing (and greatly reduced penalties for falling off small ledges). This also allows for in-air shots with proper timing.
Dynamic crosshair now uses actual weapon accuracy, rather than a separate simulation... [read more]

Updates to Team Fortress 2, Counter-Strike: Source, Day of Defeat: Source and Half-Life 2: Deathmatch 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, HL2:DM)
Fixed a bug in SourceTV that would sometimes corrupt demo data

Team Fortress 2
Cow Mangler changes
Fixed the charged shot sometimes doing more damage than intended.
Fixed a bug that caused the projectiles to stay in the w... [read more]

Updates to Team Fortress 2, Counter-Strike: Source, Day of Defeat: Source and Half-Life 2: Deathmatch 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, HL2:DM)
Updated the localization files

Team Fortress 2
Fixed a Linux dedicated server crash caused by the Replay director
Crash would happen whether the server was capturing Replays or not
Fixed the Map Stamps Collection bundle m... [read more]

Updates to Team Fortress 2, Counter-Strike: Source, Day of Defeat: Source and Half-Life 2: Deathmatch 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, HL2:DM)
Fixed a Linux dedicated server crash in vphysics.so
Get the full article at store.steampowered.com

Updates to Team Fortress 2, Counter-Strike: Source, Day of Defeat: Source and Half-Life 2: Deathmatch 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, HL2:DM)
Reduced CPU usage for idle servers

Team Fortress 2
Added the Splendid Screen, Ali Baba's Wee Booties, and the Mantreads to the whitelist for Medieval mode
Added a server console message when a player is sent to the server... [read more]

Updates to Team Fortress 2, Counter-Strike: Source, Day of Defeat: Source and Half-Life 2: Deathmatch 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, HL2:DM)
Updated the shared interfaces for the TF2 Free To Play update
Updated the shared localization files

Team Fortress 2
TF2 is now Free To Play
Added the Uber Update: http://www.teamfortress.com/uberupdate/
Added PL_Barnblitz, a new Payload map
Added all kinds of ... [read more]

Updates to Team Fortress 2, Counter-Strike: Source, Day of Defeat: Source and Half-Life 2: Deathmatch 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, HL2:DM)
Fixed a client crash when disconnecting from servers with sv_pure set to 1
Fixed a client crash in the material system
Fixed a client crash caused by using alt-tab while playing

Team Fortress 2
Added the Concheror and the... [read more]

Updates to Team Fortress 2, Counter-Strike: Source, Day of Defeat: Source and Half-Life 2: Deathmatch 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, HL2:DM)
Fixed another case where the $ignorez material flag could be used as a cheat

Team Fortress 2
Extended the Saxxy contest deadline to 11:59:59 PM GMT, Friday, May 20th, 2011
Fixed the third-person camera options dialog not ... [read more]

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

Important notes
If you were previously crashing on startup, please have Steam verify the integrity of your game cache
Update your game to the most current version
Right-click on the game and select "Properties"
Click on the "Local Files" tab
Click on the "Verify Integrit... [read more]