I go to the website, login as a returning customer.

1.  Place an item in the shopping cart
2.  Complete order
3.  Items in bag show 0
4.  I log out of the site
5.  On another computer
6.  I log in as a returning customer
7.  Items in bag show 1 (the item i just purchased in above transaction)
8.  When I go to NopCommerce/Manager Customers/Current Shopping Cart shows 0

I'm not sure what's going on here. Anyone have any bright ideas. Oddly the site has been working fine for months, and now this is happening. No code changes have been made.