Forum Moderators: Robert Charlton & goodroi
[webmasterworld.com...]
Make sure that there is only ONE URL that returns the content with status of "200 OK" and that any other alternative URLs that can access the content are via "301 redirects".
.
Use these three searches to see what is going on:
site:domain.com
site:www.domain.com
site:domain.com -inurl:www
All the best
Col :-)