I have a WordPress 3.2.1 site hosted on a DreamHost shared Debian/Apache server. Since I set up the site two years ago, it's been set to the
/%year%/%monthnum%/%postname%/ permalink structure. It was also redirecting URLs like
/?page_id=1836 to their "pretty" counterparts.
Now, however, I'm seeing entries in my statistics packages (Piwik & Google Analytics) for the "ugly" URLs. Indeed, they're not redirecting to the canonical locations any more.
Does anyone know of a plugin that has been shown to cause a problem like this? Could W3 Total Cache be contributing? I think I updated it sometime in the last few weeks; I was definitely tweaking the settings. (If it helps, my plugin list is published on this page.)
I'll debug manually when I have the time, but meanwhile I thought I'd give the #lazyweb a shot.