It's getting late here, and currently I'm at a loss.
Today's Rawhide build of xulrunner does:
%global nss_version 3.12.9
BuildRequires: nss-devel >= %{nss_version}
http://koji.fedoraproject.org/koji/buildinfo?buildID=250684 http://kojipkgs.fedoraproject.org/packages/xulrunner/5.0/4.fc16/data/logs/x8...
The root.log says:
DEBUG util.py:250: nss x86_64 3.12.9-11.fc16 build 748 k
However, that is an old build of nss from 2011-02-16. There have been half a dozen newer builds of nss for dist-f16, including a version upgrade to 3.12.10 and several builds since then: http://koji.fedoraproject.org/koji/packageinfo?packageID=248
$ rpmdev-vercmp 3.12.9-11.fc16 3.12.10-5.fc16 3.12.9-11.fc16 < 3.12.10-5.fc16
I've also searched for an Epoch change. What am I missing?