I’ve just upgraded WordPress, the software that this blog uses. Do let me know if anything is now broken.
I can’t say that the process was seamless. First I did an export, and deactivated the plugins. I ended up downloading the tar.gz. Then I renamed the old version directory, expanded the .gz to the new wordpress directory, renaming it weblog, copying the wp-config-sample.php to wp-config.php, and editing it with the credentials from the old directory. Then I copied across the theme (very important; otherwise I get a blank page). I also copied across the plugins files. Then I went to the roger-pearse.com/wp-admin link, activated the plugins, and then tried the main page. The ‘upgrade’ process just did not work for me.