I just upgraded to WordPress 2.0.5 today. So far so good. While I was at it, I disabled the siFR stuff that gave me fancy headings (provided by the CG-FlashyTitles plugin). It was slowing page-loading time down a lot. I had always noticed the slowdown but didn’t bother to measure it until now. In some cases disabling brought the page-load time down to 5 seconds from 10 seconds. I also disabled the Visual.SpellCheck because Firefox 2.0 has built in spell-checking for text boxes.