[Ipstenu (Mika Epstein)]

Your htaccess is killing a /forums/ but NOT http://huddle.inversekarma.in/forums/index.php

Which takes you to http://huddle.inversekarma.in/forums/bb-admin/install.php

So … either figure out what’s in your htaccess outside of the regular wordpress stuff that might cause this, or use the index.php? Without seeing your htaccess we can’t even guess too much.