That means the cache is really messed up on this page for non-logged in users :( The 'clear dpl' button is supposed to work all the time, but for some reason it thinks the page you're on is something completely different somehow... basically means it's a really messed up cache, xD
If you come across that again, simply add this to the end of the url, and clear the cache that way!
?action=purge&DPL_refresh=yes
So for Talan's page, it would be:
http://ffxiv.gamerescape.com/w...
I've tried resetting the cache, but it doesn't appear to be working.. Sorry :( Will pass this along to the other admins and see if we can get it fixed.