We have found numerous file system errors in the system’s log that seem to be causing performance issues, we’re now taking this machine offline to perform a file system check. We’ll update this post when we have more info.

2013-09-14 19:52 UTC: The file system check has finished its first pass and we are now verifying that the remainder of the file systems are clean.

2013-09-14 20:02 UTC:  The server is now back online and functioning normally.