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

Steam Client

    * You can now join the Friends Beta via the Friends button inside of Steam.
    * The Steam hardware survey has been updated, with improved detection of graphics card hardware and sound card detection. Results are available here
    * Added System information help menu option which shows the hardware information detected for the survey
    * Fixed offline mode not working for users who account names that are all digits with leading zeros
    * Fixed actively preloading games showing as paused in the mini-games list
    * Fixed case where store page could become stuck displaying 'loading...' and never show a page

      Source & Half-Life 1 Engine
          o Enabled Friends beta
          o Fixed several cases where the server browser would not correctly handle filtering of mods

      Source Engine
          o Improved filesystem throughput - this fixes a bunch of stutter reports in Half-Life 2

      Counter-Strike
          o Fixed menuselect 10 exploit allowing players to spawn into game in spectator mode