Oneconf was eating up a lot of memory on my system. But if you purge the oneconf package it also removes the ubuntu-desktop and software-center package. And I wanted to keep those. Especially ubuntu-desktop.

David Anderson had a nice post about this on the Ubuntu launchpad. He suggested to do the following:

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sudo chmod a-x /usr/share/oneconf/oneconf-service
sudo chmod a-x /usr/share/oneconf/oneconf-query
sudo chmod a-x /usr/share/oneconf/oneconf-update

So I did and it works great. No more oneconf service and I didn’t notice any other problems (yet).