I have raised this as a ticket but.....I installed a new Wordpress site, a new Woocommerce 2.0.5 install and Woothemes Superstore. No other plugins and no server side caching. I tried 2012 theme. I tried Abundance theme by Theme Forest (Woocommerce specific). Tried Jigoshop and the problem does not exist using that plugin. Problem only surfaced after V2 was issued. Conclusion - it must be Woocommerce V2.
???