We had some issues with the server that required a restore of the server, and a complete restore of vBulletin as well. It took a bit longer than expected to get everything up and running again, but most (important) things are up and running again. There are still a few more issues that need to be resolved (ie, knowledgebase and a few other third party scripts) but for the most part, everything should be good to go.
Sorry for the inconvience.