Authentication failure installing iceweasel 36.0-1~bpo70+1

[JEFF]

Hi,

Upgrading iceweasel 35.0.1 to 36.0-1, I get the following authentication error:

==== apt_distupgrade -t wheezy-backports ====
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Calculating upgrade... Done
The following packages will be upgraded:
  iceweasel
1 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 39.6 MB of archives.
After this operation, 1,071 kB of additional disk space will be used.
Do you want to continue [Y/n]? 
WARNING: The following packages cannot be authenticated!
  iceweasel
Install these packages without verification [y/N]? 
E: Some packages could not be authenticated

# gpg --check-sigs --fingerprint --keyring /etc/apt/trusted.gpg.d/pkg-mozilla-archive-keyring.gpg --keyring /usr/share/keyrings/debian-keyring.gpg pkg-mozilla-maintainers
pub   4096R/06C4AE2A 2010-11-20 [expires: 2019-11-13]
      Key fingerprint = 85F0 6FBC 75E0 67C3 F305  C3C9 85A3 D265 06C4 AE2A
uid                  Debian Mozilla team APT archive <pkg-mozilla-maintainers at lists.alioth.debian.org>
sig!3        06C4AE2A 2012-11-14  Debian Mozilla team APT archive <pkg-mozilla-maintainers at lists.alioth.debian.org>
sig!         A6AA8C72 2010-11-20  Mike Hommey <glandium at debian.org>

1 signature not checked due to a missing key

# apt_policy iceweasel
iceweasel:
  Installed: 35.0.1-1~bpo70+1
  Candidate: 36.0-1~bpo70+1
  Version table:
     36.0-1~bpo70+1 0
        500 http://mozilla.debian.net/ wheezy-backports/iceweasel-release amd64 Packages
 *** 35.0.1-1~bpo70+1 0
        100 /var/lib/dpkg/status
     31.4.0esr-1~deb7u1 0
        500 http://security.debian.org/debian-security/ wheezy/updates/main amd64 Packages
     31.3.0esr-1~deb7u1 0
        500 http://ftp.us.debian.org/debian/ wheezy/main amd64 Packages

I very much appreciate the fantastic support for iceweasel on Debian.

Thanks,
-- 
Jeffrey Sheinberg