[re: "Most people who post here subscribe to the list, so they will receive any response you make to the debian-user list. If you send to the list and to them, they get two copies of each message."]
Just a note on email addressing: I was using gmail, with it's built-in interface. Although the default reply setting was set to "reply all", for some reason it automatically adds the email address of the last person to reply to a thread, in addition to ALSO replying to the whole list. If I don't remember to manually edit the "send to" address line, someone gets an extra treat in their inbox. If anyones does get this sent to their own address in addition to the one sent to the list, please say so on the list, so that I will know and try to find some way to fix it "automatically". Sorry.