Hit Ctrl+c during do-release-upgrade. Did I break it?
Solution 1:
Your /etc/apt/sources.list was most probably changed to the new version at the point you aborted the upgrade. This will make do-release-upgrade or apt-get dist-upgrade behavior unpredictable.
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Change it first with (assuming you were upgrading from 11.10):
sudo sed -i -e 's/precise/oneiric/g' /etc/apt/sources.list Then do a
sudo apt-get updatefollowed by ado-release-upgrade.