On Mon, Jun 24, 2013 at 03:48:39PM +0100, Mark Rogers wrote:
10.10 has not been supported for ages - indeed to get to a version which is not EOL I need to skip 11.04 and 11.10 and go straight for 12.04LTS.
I know this isn't the answer to your question, but:
I'm not sure that you did that the right way, I'd think you'd have to go 10.10 to 11.04 and then to 12.04LTS.
I believe the way you're supposed to do it is apt-get install update-manager-core and then sudo do-release-upgrade.
Adam