For some reason I just noticed that when I visit my site via IP I don't get redirected to my URL. I recall it automatically redirecting some time ago, but I don't know when it would have changed. I actually only noticed it because there happened to be a linkback from my own site from the IP instead of the URL...

The only major change I made recently was moving my .htaccess files into httpd.conf and I tested it by removing the contents from httpd.conf, restarting Apache and putting my .htaccess files back in place. Still no luck after trying that and I'm worried about duplicate content as well as cookie problems that might arise.