I've done a server upgrade today.
This upgrade replaced pretty much all the software on our server with new versions, including (amongst other things) the kernel, webserver, database server, etc.
As a result, there may be some instability today/tomorrow as I hunt down any bugs left over from the upgrade.
In particular, there may be downtime of up to an hour at some point when we reboot the server and may have to rebuild some things in the process.
If you notice any weirdness on the site, please PM me directly to let me know.