Sorry for the Inconvenience
I was just thinking that this site had been quiet. I hadn’t had a single comment for ages. I was just feeling lonely when I checked my apache error logs and saw that the comments table was corrupt! MySQL had spat its dummy out and was waiting for me to type “repair table wp_comments”. Why it couldn’t have done that itself I don’t know.
Anyway, if you tried to leave a comment and it got lost then I’m very sorry! Should be working again now.