W3 Total Cache help please , made my www. And non www no resolve I had a bit of a nightmare with w3 total cache , w3 sped my site up , but via a test on woorank , i found that the site was showing as possible duplicate content and showing that the www. And non www. Did not resolve . Has anyone had the same experience or any does anyone which settings i should be changing to make the w3 total cache plugin work ?