Does anyone have problem using Firefox to access https://auth.startssl.com with their unexpired personal certificate? I get the following error page:

Secure Connection Failed
An error occurred during a connection to auth.startssl.com.
Peer does not recognize and trust the CA that issued your certificate.
(Error code: ssl_error_unknown_ca_alert)

But my IE 8, on the same computer, works just fine in getting into the StartSSL Control Panel. The Firefox I am using is version 14.0.1, and I prefer anything but IE. Any pointers in resolving this issue is most appreciated. Thank yo