Updates to Portal have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

Fixed screen "fuzziness" caused by color correction operation
Fixed text not rendering in game if font Tahoma was disabled
Fixed startup video not playing fullscreen
Added optional -snd_openal command line parameter to force the engine to use the OpenAL api, can be used if Portal is playing no audio when launched normally
Added mac_fsbackground convar, on Snow Leopard or better you can set this to have Portal still visible when it is not the foreground application

Updates to Portal have been released. The updates will be applied automatically when your Steam client is restarted.

Portal

• Added valuable asset retrieval
  

Updates to Portal have been released. The updates will be applied automatically when your Steam client is restarted.

Portal

• Changed radio transmission frequency to comply with federal and state spectrum management regulations