(Maybe this shall not be under "Upgrade Warnings", then please move it to where it belongs).
Because of today’s failure to boot into x on one computer after d-u because I didn't say yes to the new lightdm.conf that apt asked if I wanted or not, I want to ask this:
Shall we generally say yes or no to new config files during d-u?
If there is no general answer, how shall we know how to do?
Until now I have generally always gone with the default, that's not to install the new one and today was the first time that it failed I think.