Firefox and Thunderbird 15 fix several security vulnerabilities
Following the release of version 15 of Firefox and Thunderbird, Mozilla has detailed the security vulnerabilities that have been fixed in both products. The fixes include seven critical vulnerabilities in Firefox, five of which are also present in Thunderbird. All in all, the new version of Firefox addresses 16 vulnerabilities while the new Thunderbird version closes 12 holes.
You don't need to be a genius to debug a pf.conf firewall ruleset, you just need the guts to run tcpdump