My laptop came with Ubuntu 11.10 and then I let it upgrade to Ubuntu 12.04 LTS and I notice now, many months later, that the relevant line in /etc/apt/sources.list.d/system76.list has been commented out with the comment "disabled on upgrade to precise". Is that badness? Is there something that I should be doing with that? If so, what are the commands? Do I just edit the file in order to uncomment?