It would probably help if you could state what your problem is, and what
the Selenium test does.
You replied to a message from November 2009 without quoting anything of
the original text. Also, this is a Thunderbird group. For problems with
Firefox mozilla.support.firefox would be the better choice.
Looking at the Remember Certificate Exception add-on, it's not something
I'd use. Auto-click to confirm a certificate security exception means a
higher risk to get to a malicious web site.
Cross-posted and follow-up set to mozilla.support.firefox.
--
Christian