Disabling the Cookies for Comments plugin broke the comments form.
On the recommendation of Matt Cutts, I added the Cookies for Comments plugin to this blog, and also added their recommended .htaccess modifications:
RewriteCond %{HTTP_COOKIE} !^.*XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX.*$
RewriteRule ^wp-comments-post.php - [F,L]
When I realized that Cookies for Comments was slowing down my blog considerably, I disabled the plugin, but did not think to remove the .htaccess rewrite rule. The remaining .htaccess rules broke the comments on this blog (for two weeks now, could it be!?). Continue reading “WordPress Comment Form 404 Error – Now Fixed!”