One of the Powerblogs servers is unable to reach the network. We're currently working with our upstream provider to get the issue fixed (they're not sure yet, but it looks to be either the physical infrastructure or the switch). This is our new, more powerful server.
Obviously no one's happy about this. We were lulled into a false sense of security by our previous good experiences with them.
Obviously, we can't let things continue this way. We're working now on a redundancy plan to make our servers fully robust against upstream provider issues. I'll try to get the details out tonight once we're reasonably settled on what the plan and new design is going to be.
Update: we're back up. Apparently it was a network cable (now replaced) that had us down for so long.
I'll be updating with the plans for a redundant server as they firm up.