Fungus, the FUMBBL Web server just had a small hiccup, causing the site to go down for a while. Things are now back up and running and will hopefully remain so.
The problem was caused by the machine kernel throwing some errors, which after a search online may be caused by a failing power supply. The power supply in the machine is from a pretty reputable manufacturer (Seasonic), so for now I will monitor the logs to see if the problem reappears. If it does, I will replace the PSU hoping to fix the issue. Intermittent problems are so much fun, don't you think? :)
Hopefully, this interruption hasn't caused any of you too much trouble.