Strange certificate behavior in Firefox, and not IE

Hi,
Start at http://www.lenovo.com/products/us/en/

With Internet Explorer, clicking on the links 'Desktops" or 'Notebooks' is error free. With Firefox, doing so produces a Certificate Error, 'Could not verify this certificate because the issuer is unknown'. The OU is VeriSign, Inc., the Organization is VeriSign Trust Network.

Duplicating the issue has proved impossible from the same computer. Reinstalling FF does not help. My knowledge of certificates is limited; my best guess at troubleshooting was to copy the page's sourcecode to a local HTML file, and try from a new install of Firefox on a new computer. This did not generate the warning.

Maybe I need more help in understanding how to troubleshoot this, perhaps a way to duplicate the problem from the same computer.

The problem is the warning should not appear until clicking 'Checkout', many steps later in the process. Please help me learn the cause.

Thank you.
-Brett
brettwalkerAsked:
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BasilisciConnect With a Mentor Commented:
If it helps, the page calls the following HTTPS URLs in Firefox, however in IE those does not get called:

https://shop.lenovo.com/SEUILibrary/controller/seutil.workflow:ShowErrorPage?reason=nomatch               
https://shop.lenovo.com/SEUILibrary/controller/seutil.workflow:ShowErrorPage?reason=nomatch               

I would suspect the cause is some Javascript error, as the page contains some error handling scripts that seem to do stuff as loading resources / redirecting requests.

I don't know much about certificates either, but it seems that the Common Name portion of the certificate issuer is not available or readable, it only has OU etc..
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brettwalkerAuthor Commented:
A simpler start may be to understand which portion of the code at http://shop.lenovo.com/SEUILibrary/controller/catalog.workflow:CompareByNeed?current-category-id=FFA158AAECE944CD9055899B3280EA36 generates a security warning, but only on the first visit to the page.

Thanks
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