I can confirm the problem appearing out of nowhere on Ubuntu 16.04 (upgraded from 14.04). I attached the output from 'apt-get update' and 'apt-key list'. Feel free to ask for additional detail.
** Attachment added: "output of 'apt-get update' and 'apt-key list'" https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1592040/+attachment/4760303/+files/apt-gpg-problem.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1592040 Title: Can't update repos due to signing problems To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1592040/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
