I am running the free small business theme at version 2.0. I noticed some 404 results for site visitors, via Google Analytics. 404s resulted when clicking on valid, in-use categories, did not return results. Other categories work just fine. Inspecting posts using the admin dashboard shows the categories properly assigned to posts. Searching the site for those categories returns correctly categorized posts. What can I do to fix this problem? My site is http://www.mytechanalyst.net.