I’ve managed to fix the permalinks system, but I can’t get the Feedburner feed redirection I set up a few weeks ago to work at all. I can’t work out if it’s something I’m doing wrong with my .htaccess or some incompatibility with the new version of Wordpress (probably the former). So, for now I’ve disabled it. It won’t make any difference to anyone who’s subscribed to my feeds (according to Feedburner, that’s two people. And one of them is me) - the only difference will be that my Flickr posts are no longer spliced into my feed. Oh well.
Maybe I’ll work out how to fix it eventually.
