I'm going to upgrade the forum software, probably tomorrow (Tuesday) evening. Everything is backed up in case of catastrophic failure but if the forum is down for a while, that's why.
Apologies for the downtime. The forum software is going to require a server update as it turns out the server is pretty old now bless it. Everything should be back working but let me know if anything is amiss. We'll try again with a shiny new server in the new year.