General:
Fixed sound dropping out when playing networked games
Improved graphical performance, especially when using Ambient Occlusion
Fixed voice packs being reset to default when you delete another character
Removed ability to use certain cheat protected commands in challenges
Fixed memory leak/crash when alt-tabbed out

User Interface:
Full servers are no longer filtered out of the browser
Added support for entering a range of numbers (i.e. 10-12) in server filters
Reduced font size in the server browser
Exiting Head customization returns to the correct menu
Fixed being unable to bind KP_Enter in the UI
Increased font size of in-game text chat
'Enter' now closes text chat prompt if empty
Fixed challenge in menu flashing even after completion

Dedicated Servers:
Improved dedicated server CPU performance
Fixed NPC not spawning for escort objectives online on servers using unsupported cvars