I'm not sure when it happened as I've been out and about recently, but at some point this blog was "hacked" and some suspect code ended up causing a few problems. I've updated WordPress and resolved the issue. Posting frequency will still be down until I'm back to work and whatnot, but fear not, I shall return.
From Bangkok to Dili to London and back...
The fact that it was hacked shows that your blog is interesting enough for someone to take some time trying to get into it.