Just to let you know we have reworked some of the code of UPCZilla to speed up page load times A LOT. This has basically meant loading some portions of the UPC data asynchronously (AJAX), whilst making sure there is some info displayed in the meantime for you to look at.
We expect some teething troubles with this, so apologies in advance, we will try to make sure any major problems are ironed out asap. In the meantime we hope users, and the search engines too, will appreciate our much faster load times.