Looks like they figured out the waiting for server bug... anytime a change is made on the DB the servers need to restart. So any server that doesn't restart every 24 hours or so is going to get that bug.
That aside, i logged in and with the new zombie spawns its... its intense. I havent bothered to go near cherno or electro yet but just trying to clear the few lootable buildings in pusto was hardcore. Thank god i picked up a winchester. This thing is now my favorite weapon, its quieter than an ak, one hits zeds, and ammo is practically everywhere if you know which buildings to look in. Started playing about 2 hours ago with 20 zed kills... logged off with 230.