I have turned caching back off, cleared the sit'e cache, and cleared browser cache but the site has continued to have this issue.
I have mod_virtuemart_cart posted on every page in the left hand column. After clicking "continue shopping" and browsing several pages, the modules appears empty and states "Your Cart is currently empty."
Here is the interesting part, once I add another item to the cart my old items appear as well.
Any thoughts?