Updates to Left 4 Dead Demo have been released. The updates will be applied automatically when your Steam client is restarted. The specific changes include:
Left 4 Dead Demo
Tuned matchmaking to provide better search results
Added UI to host a game on a local server
Improvements and performance optimizations to network layer
Improved handling of unsupported graphics hardware
Fixed a rare crash when kicking people from lobby
Fixes for demo exploits
Localization fixesIncrease automatic port range when running a Linux dedicated server with -fork