Yes, I’ve just got this blog working again (its actually been out for a few months).
I’ve been putting a lot of effort into (as3)statemachine.org over the last few months, and hadn’t noticed that my ISP had moved their ftp server, and I was getting resolving errors.
Weirder though was the 500 error I was getting on trying to navigate to any wp admin pages. Eventually this sorted it. The php scripts were running out of memory, apparently. Adding a php.ini file in the wp-admin folder with memory=20MB fixed the problem.