I upgraded to the latest release and tried to carefully follow all the steps, but I've apparently failed. I've left all plugins deactivated and switched to the default theme as I try to troubleshoot this. The site is:
While the home page will load and the admin pages seem fine, any other page -- archives, the About page, single post page -- all seem to be not found. Any idea what I did wrong? I deleted all the WP files/folders except those specified and ran upgrade.php after uploading the new files. Any help?