Mozilla Firefox and other products have been revised to remove the hacked DigiNotar Certificate Authority,

Mozilla Firefox 6 – Security release for hacked Certificate Authority
http://securitywatch.pcmag.com/apple/287116-firefox-and-other-mozilla-apps-rev-to-blacklist-hacked-ca

QUOTE: Mozilla has released several new versions of programs in order to remove support for a root certificate from a hacked certificate authority.   We reported yesterday about how this root certificate had been used to create a fake google.com certificate, but it turns out that the hack occurred weeks ago and had been used many times. DigiNotar, the hacked certificate authority, is in a desperate struggle to retain their credibility.  The newly-updated programs are:

  • Firefox 6.0.1
  • Firefox Mobile 6.0.1
  • Firefox 3.6.21
  • Thunderbird 6.0.1
  • Thunderbird 3.1.13
  • SeaMonkey 2.3.2