Product Update - Valve
Updates to Portal 2 have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

Portal 2
  • Fixed unrecoverable black screen in elevator save
  • Fixed infinite loop on Mac OSX server
  • Fixed Mac OSX font rendering and glyph corruption
  • Fixed GC memory leak
  • Various localization content improvements
  • Support for English subtitles in Turkish builds
  • Minor string/interface glitches
  • Fixes for multiple crashes
  • Improved detection and handling for various errors and/or crashes
  • Activated UI to enable joystick in-game
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