Steam update for Steam this time

This update is for Steam itself. Here is the changelog:

Steam Client

• Improved cache defragmenter to both defragment at the OS level and internal files
  
• Improved defrag progress dialog
  
• Improved download status reporting in games list
  
• Increased background update frequency
  
• Improved voice quality
  
• Added audio recording device selection for voice chat
  
• Added push-to-talk support for voice chat
  
• Fixed apps getting stuck at Updating 0% when downloading
  
• Fixed possible crash when resuming from Standby mode
  
• Fixed Steam preventing some PC's from entering Standby mode
  
• Fixed overlay sometimes getting stuck up and not responding to hot-keys after server join
  
• Fixed uninstalled apps becoming installed when viewing their Properties page after Steam restarts
  

[Source]