The same here on Trusty: # apt-get update ... ... Fetched 297 kB in 2s (111 kB/s) W: GPG error: http://de.archive.ubuntu.com trusty-backports Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <ftpmas...@ubuntu.com> W: Failed to fetch bzip2:/var/lib/apt/lists/partial/de.archive.ubuntu.com_ubuntu_dists_trusty-updates_main_binary-amd64_Packages Hash Sum mismatch
E: Some index files failed to download. They have been ignored, or old ones used instead. # echo $? 100 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1355430 Title: Failed to update packages: GPG Error with BADSIG as returned message To manage notifications about this bug go to: https://bugs.launchpad.net/elementaryos/+bug/1355430/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs