Sorry about that, this was my fault
![Oops! :oops: :oops:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
. I made a quick change to the database about 10 mins ago which was supposed to make a nice speed improvement, however it didn't like one of the settings and decided to restart. Very sorry about that, I wasn't expecting any downtime - but I've rolled back the problematic change now.