In the last 24 hours the site has been up and down constantly. I have checked the logs — there has been no great increase in traffic (instead, unsuprisingly) it is decreased.

So no DNS attack.

I have moved back to twenty-eleven as the theme @ present.

I have also disabled Jetpack. That has sped things up considerably. The plugins left are disqus (for comments) antispam bee, and bad behaviour.

Here’s hoping that the site now functions.