A small Ubuntu 13.04 virtual machine instance I run in a cloud environment regularly becomes slow/unresponsive because of a proces called check-new-release. Is there any way to disable this process and maybe run it manually instead?

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    Same problem on an ordinary Ubuntu 13.10 install on a new machine. I already had Prompt=never set. – Carl May 9 '14 at 20:46

In the file /etc/update-manager/release-upgrades change Prompt=normal to Prompt=never.

You can also do this through the GUI, but that may not be appropriate for a virtual server.

You can do a manual check for a new release with do-release-upgrade

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    Unfortunately this doesn't seem to solve the problem; now I saw that process creep up again after I had changed the configuration and rebooted the machine. – Bjorn Thor Jonsson Aug 19 '13 at 6:56
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    hmm, I gave the answer a point up, but had to take it back. I'll wait and see and then come back. I'm in the same boat, no GUI because it's a virtual server on digital ocean. – Thufir Feb 8 '14 at 7:09
  • Me too, all my servers just had their cpu pegged for ~60 seconds by this process at the same time. Not cool! Also on digitalocean – Kevin Mar 18 '14 at 23:03
  • This change did not fix the issue for me. – ahonnecke Oct 26 '15 at 15:21

Try doing

apt-get remove ubuntu-release-upgrader-core

The script that you're seeing running is /usr/lib/ubuntu-release-upgrader/check-new-release, and removing the above package will remove that script completely.

A description of this package is:

ubuntu-release-upgrader-core - manage release upgrades
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