apt-get install debian-keyring debian-archive-keyring

time DEBIAN_FRONTEND=noninteractive apt-get -o DPkg::Options::=--force-confnew upgrade -q -y < /dev/null

export DEBCONF_ADMIN_EMAIL=""
DEBIAN_FRONTEND=noninteractive apt-get -o DPkg::Options::=--force-confnew upgrade -q -y < /dev/null
16 minutes elapsed time.
rm -f /etc/ca-certificates.conf.dpkg-old
DEBIAN_FRONTEND=noninteractive apt-get -o DPkg::Options::=--force-confnew dist-upgrade -q -y < /dev/null
412 upgraded, 133 newly installed, 9 to remove and 2 not upgraded.
Need to get 0B/289MB of archives.

The following packages have been kept back:
  libgtk1.2 lvm2