No more declares developer Valve, because they've just had a "massive" upgrade to servers. They've also "added more dedicated" ones.
"We have upgraded our network infrastructure to better accommodate the huge response to L4D2. 360 players will now have lag-free servers. We've also added more dedicated servers," Valve on the official Left 4 Dead Blog, reports .
"We will continue to monitor the situation and add resources as needed," they said. "Thank you for your patience. Now quit reading this, get out there and kill some zombies!"
Well, you heard the Valve man - get to it! Infected don't buckshot themselves you know.