[Conkeror] [BUG] Resolving doesn't work in xulrunner/conkeror but everything else works

[Ævar Arnfjörð Bjarmason]

I installed xulrunner-1.9.0.2pre.en-US.linux-i686.tar.bz2 from the
nightly builds on Ubuntu Hardy and ran conkeror under it. accessing
websites as IP addresses works but the resolver in xulrunner behaves
as though DNS isn't working on the machine ("Address not found"). DNS
works normally for everything else (dig, ping, firefox, etc.).

Why would xulrunner not be picking up the DNS settings in
/etc/resolv.conf? This has also happened with other xulrunner builds
from ~2 weeks and ~1 month ago on the same machine.