Something that has really been “eating my head” lately, as my Indian friends say, is the fact that comments haven’t been working on several of my blogs. Of course I didn’t know it until I got an email about it, because I really don’t comment on my own blogs that much.

After you would enter a comment it would just route you to wp-comments-post.php, and the screen was blank, and no comments were coming through in the moderation queue on the backend. After some investigation I figured out what the problem is. I have my .htaccess file set up to redirect http://example.com to http://www.example.com to solve any Google url canonicalization issues, but in my Wordpress options I had the URL of the blog set as http://example.com. When someone would submit a comment, Wordpress would send the comment to http://example.com/wp-comment-post.php but my .htaccess would redirect that to http://www.example.com/wp-comment-post.php. During that redirect the comment was “lost” or the system got confused or whatever and I saw a blank page.

I was also having a problem when logging in at /wp-admin.php. After I logged in successfully I was getting routed to /%2Fwp-login%2F. I would suspect that it was the same .htaccess problem, although I don’t for sure because when I upgraded to Wordpress 2.1 it fixed this problem.

If you’re having the same problem make sure your blog URL and .htaccess match up and it should fix the issue.