In an attempt to keep their game as balanced as possible, Valve has introduced "fatigue" into Left 4 Dead's versus mode. Players can still run 50mph without any problem, but melee attacks are on a cool down timer. In other words, standing in the corner and swinging wildly isn't a valid option anymore, and it should not be much easier to feast some brains during versus matches.

They've also improved Boomer vomit. It will now pass through common infected enemies, making it even easier to drench the survivors in throw-up. I'm all for this, especially since it let me write about "improved vomit" under the guise of journalism. High five.

This is a PC only patch as of now, but it will likely make its way to consoles in the near future. The full patch notes are below.

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

Dedicated server changes

• 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

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