Sorry about that. It should be fixed now. Because we have such a large database, we have to perform upgrades from time to time to ensure that everyhting remains stable and secure. There's no easy way of doing this so, unfortunately, we have weeks such as this one: deeply frustrating for everyone, with no discernible end product as far as the outside world is concerned.
Again, I sincerely apologise for the inconvenience. Hopefully we are through the worst.