This WordPress blog optimization post might be useful, I just deleted several plugins that I'm not using, and there's a few more I might get rid of on my personal blog. It's been running "not-quite-right" for a while now.
Reducing CPU Usage and Speeding Load Time | WordPress Guides and Stuff
Tips to optimize your WordPress installation. Make it fast, get rid of slowness issues, and keep your host from hitting you with CPU complaints.
