Log into http://cprince.devel.webdevel.redhat.com/cgi-bin/store and place a boxed set in your cart. Next you will be taken to the cart page and you will notice that the cart is huge. You have to scroll left and right just to see the full line-item details.
OK, this is odd. I logged out as rhn7_mocha and then back in and things appear to be fine again. Might just be something weird with the cookies.
This is because you are testing on the development site, it was huge when I added a lot of debugging output, and got small again when I took it back out.
Closing out this bug.