Website is still down, that's a shame - OP can't even get the homepage back online before showing HN.
30 minutes to bring back a homepage is pretty bad man, also your personal homepage http://paulbjensen.co.uk is returning NO CONTENT, is that on the same (bricked) server?
It turns out ulimit was set to 1024 when I thought I'd configured it to unlimited.
As for paulbjensen.co.uk, I removed that site about 3 months ago but didn't remove the link to it in HN. As for your question about the same bricked server, the answer is no, I run Dashku on a different server to the server that was hosting paulbjensen.co.uk.
30 minutes to bring back a homepage is pretty bad man, also your personal homepage http://paulbjensen.co.uk is returning NO CONTENT, is that on the same (bricked) server?