Does it happen also with experimental xulrunner/iceweasel 1.9.1.3-1/3.5.3-1 ?
If you haven't already started your build, xulrunner FTBFS on kfreebsd-i386 for me so there's probably some porting needed first.
It is only slight porting, unfortunately https:// does not work also with xulrunner/iceweasel 1.9.1.3-1/3.5.3-1 :-( Petr