[Plugin: Woocommerce] Odd bug in Checkout page!

Hi All,

Im running Woo 1.6.3 and seem to have a very strange bug. The checkout page displays perfectly when signed in/registered. But when viewing the checkout page (after adding items to the basket) as a non-registered customer the ‘Your Order’ section of the checkout, instead of showing a break down of your order, it displays the whole frontpage of the site.

Example: https://img18.imageshack.us/img18/5482/wierdx.jpg

Any ideas?????