After 9 months of 2012 and 2013, suddenly almost every web site I visited with Firefox 16 returned an invalid certificate warning. IE9 did not have that problem and worked as expected. Each Firefox site exception resulted in a Bitdefender CA applied. From an old forum entry I turned off SSL scanning that made things work fine.
Question - how to I get back to a working Bitdefender and Firefox without the false certificate warnings for virtually every site, and enable SSL scanning as I had for a long time?