Game and client changes
- Introduced fatigue to the melee attack in versus mode. You will see a HUD display when your melee swing is cooling down
- Boomer vomit will now pass through common infected
- Addressed some surround sound detection issues
- Fixed a rare crash when exiting Left4Dead on Windows Vista
- Fixed a case where the complete all expert campaigns achievement was not being rewarded
- Corrected an issue where Windows based dedicated were sending spurious shutdown notifications to the master causing them to delist temporarily
- Fixed dedicated servers not resetting the versus team swap correctly--you could join a dedicated server that had a previous game that was swapped and arrive on the other team than what was selected in the lobby
- Renamed the tags for sv_search_key to use "key:" in the server tags instead of "sv_search_key." This should help with issues of the 63 character limit of server tags
- Fixed an occasional server crash related to voting
