> The following change seems to fix this.
But don't make that change, because then updates are not enabled after reboot!
# ls -l /run/resolvconf
drwxr-xr-x 2 root root 60 2012-02-16 17:12 interface/
-rw-r--r-- 1 root root 0 2012-02-16 17:12 postponed-update
-rw-r--r-- 1 root root 151 2012-02-16 17:12 resolv.conf
Combined with the curious fact that, after boot, the status of resolvconf is "stop/waiting" and not "running" (as I earlier mentioned here: https://bugs.launchpad.net/ubuntu/+source/resolvconf/+bug/929552/comments/16), it looks to me as if resolvconf is both started and stopped on boot, except that pre-stop scripts are not run. Or something. I don't understand Upstart.