After I turned on the blog feature in ver 1.9 I am getting over 500 duplicate page errors when my site is being crawled by the search engines. I really need to make my site SEO friendly. Is there an easy fix for this? Should I upgrade to 2.2? I need to fix this in category, topic, product, manufacturer, and blog. I see an earlier post regarding this issue about  7 months ago but I couldn't quite follow it.