Category pages are currently not working on my blog. When trying to view a category page, such as this one: http://tomlany.net/category/photos/, I either get a 404 error or am redirected to a page or post with a similar name to the category.
I am using permalinks (with mod_rewrite installed on my server). When I turn permalinks off, the category's entries are again visible. The category pages in the WordPress admin are also currently working properly. Strangely, categories have worked previously with my blog, and permalinks for entries work just fine.
I have tried recreating my htaccess file, reinstalling WordPress, optimizing/repairing my database, turning off all plugins, and switching to the default Twentyeleven theme, none of which helped.
I have not made any major changes to my blog recently (functions, themes, plugins, etc.), although I'm not sure if I checked to make sure categories were working after I upgraded to WordPress 3.3.
Do you have any thoughts for how I can get categories working again on my blog? Thanks!