Yes, I have broken something major here, and I apologize for the mess. It will be fixed soon.
Edit: I attempted to upgrade WordPress to 2.3.1 from 2.1.3, and got various errors about old schema, despite all plugins being deactivated. So I went back to 2.1.3 … and promptly lost all my categories. Looks like this site will remain in chaos until a new version of WordPress comes out, or until I give up entirely and go net.dark, which looks more appealing by the minute.
Later edit, after sleep and sushi and more cold medicine: meh. I switched back to my old theme, added a plugin for threading comments, and ran out of steam before tackling the disappeared list of links. O, and I joined NaBloPoMo. So it’s a wash, and now I am going to play WoW with D. Good night.