Has anyone else had a problem connecting to games online recently? For the past week or so me and my group of friends haven't been able to play online with each other. It doesn't matter who hosts, what game type it is (Coop or VS). what kind of server we choose (Official, Best Dedicated or Local) or what map/campaign we choose, the game will load for whoever is hosting it, but everyone else will stay stuck on the loading screen and pop back into the lobby with no error message. We were able to connect just fine for the longest and have had no issues until last week.
We've all verified our game caches, defraged our game files, and still no fix. The only thing we haven't tried yet is disabling our add-ons, but all we have are custom campaigns that we've played with many times before.
I've also submited a support ticket on Steam and even contacted the L4D Dev twitter account for some kind of help or suggestion, because it's irritating that a game we play constantly decides that we can't play anymore for no reason.