So, I installed WordPress 3.0 and switched over to their new default template. So far, so awesome. The new functionality, the surface of which I’ve only barely scratched, is great.
I only noticed one bug: using the Digg Digg plugin (which I love) causes chunks of jQuery code to display at the beginning of every archived story when viewing by category. My fix? Go into Settings->Digg Digg. Under “Buttons allow display in,” make sure that Category and Archive are deselected. Fixed!