My Mother (a relatively new and very happy user) told me that a day or so ago, at 4 am, the printer made some noise similar to what it makes when a mail is about to print, but of course nothing printed.  Then about 45 minutes later it happened again.  Never before (at least that she heard - it is next to the bed) and not yet since.  Anyone having similar experiences or know the cause?   Curious.  SteveM