Just in case anyone is lurking out there. The problem was I had to download and install three other Certificate of Authority files. This is what happens when a cheep certificate is purchased.

>I have an interesting problem. I just installed a renewed cert from register.com. Now FF (3.6.10) says it can't determine the issuer but chrome and IE work just fine. I called register support and they were able to user FF (3.6.8) just fine. Anyone seen this problem before?
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>Thanks.