Re: warning: directory permissions differ on /usr/lib/mysql/plugin/auth_pam_tool_dir/

  When these crop up from time to time on update, do we just fix them and move on, or it is worth digging into further to find out when and why the permissions changed? If you’re sure you never changed the permissions yourself and this is not a case of a conflict between packages, blindly applying changes is mostly fine: it’s just setting the defaults.

If at least one of these is false or you’re not sure, you should make an informed decision.