Left 4 Dead 2 Discussion
The only real solution is to use Go Offline in the File menu and run steam in this mode. It'll bother you everytime you launch it to restart in online mode, but ignore that. You don't actually have to be disconnected from the Internet for this to function.
I used this when I was camping for a week to play some games without having to use airtime on an air card or something on my laptop.
Given the integrated online features and game modes in l4d2, I'm actually curious to see if this would work, as I ran FO3, SR2, and Prototype in offline mode.
I think I hate steam's auto update. It happens even if you are in offline mode. How is that right??!??
* Updated game trainers and cheats daily
* Get notified when new cheats are added
* Request which games get new trainers
* Priority support with any problem