I have been having problems adding and deleting Categories (of blog posts) from the Dashboard.
If I delete a category it seems deleted, only to find later the deleted category is still on the list. If I go to add a new category, hitting the "Add Category" button does absolutely nothing.
Is this possibly related to an issue I'm also having where I can't navigate to categories when on the blog?
FWIW, I've had to gut my last two installations, deleting all but the My_SQL database. Also, I had to change server settings a couple of times - was hosted on a server in Hong Kong (using the machine address rather than my domain name while in development), moved to a U.S.-based machine URL, then finally to my own domain. Could this have possibly screwed something up?