If this is a bug, it is a very annoying bug. I've done this with every forum software known (seriously), so I'm beyond puzzled as to what the hell is going on. I took my master site, backed up all the files and the database Copied all the files and imported into another database ... ie .... Test site (complete mirror image). Changed the paths on the test site and rebuild all the cache. Yet whatever I do to the test site, ends up happening on the main / master site. Now here is a kicker, whatever I do on the main / master site, also affects the test site. The address in the address bar is completely different They're both on a different path on the server They each have their own database (neither of them are names the same, have their own user & password too) Thoughts?