Had the same issue. Switching to RRZN mirror fixed that for me (https://launchpad.net/ubuntu/+mirror/ftp.rrzn.uni-hannover.de- archive3).
According to the mirrors status overview de.archive.org repository synchronization is one week behind (https://launchpad.net/ubuntu/+archivemirrors). Maybe this explains the bad gpg signature, plus: If so, this is not an ubuntu bug, but a mirroring problem. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/837342 Title: GPG error: http://de.archive.ubuntu.com oneiric Release To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/837342/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs