when choosing a category in the dropdown of the category widget on my page, i get a 404 error. also, the url shows http://mysite.com/category/ - and does not add the category name at the end. I can get to categories by clicking the cat link in the post, but the dropdown is not working.
anyone have a similar problem or any clues? at first i thought it might be a permalink issue, but it's set to one of the defaults (Month and name).