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PLD Ac, Th and Titanium are using custom builds of XULRunner to provide libraries for all applications using Gecko engine (except Iceweasel, Icedove and Iceape). Since Firefox 3.0 was released XULRunner may (and even should) be built from Firefox sources. Be sure to include CVE notes when updating this and other Mozilla packages. You may obtain them from http://www.mozilla.org/projects/security/known-vulnerabilities.html.
Following specs must be rebuild after XULRunner upgrade on all PLD distros:
Additionaly for PLD 2.0 (Ac):
PLD Titanium and PLD 3.0 (Th):