Just did a clean upgrade to WordPress version 3 (as opposed to overwriting my existing install) and switched to the new default theme. The only plugins I use are Livejournal CrossPoster and WP Hashcash (for blocking automated spam comments), and I need to write a post and get no spam on it to see if they work, so…
Update: I also moved the root of my blog to http://corky.net/dotan instead of http://corky.net/dotan/log; you may need to adjust your feed links (although I’ve got rewrite rules to handle that, I think).