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'Requires installation of untrusted packages' error message prevents installing
new software or updates for Ubuntu 12.04
I tried using Terminal sudo apt-get update but didn't get NO_PUBKEY numbers
-message'unable to connect to nz.archive.ubuntu.com
Clicking Check button in Update manager allowed some updates to install but not
new soft ware.
Unable to find GPG key.
** Affects: ubuntu
Importance: Undecided
Status: New
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Requires installation of untrusted packages stop installing software and updates
https://bugs.launchpad.net/bugs/1093773
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