The time of inactivity before the DG forum automatically signs me out seems to have reduced significantly. I was signed out by the forum twice in the last half-hour after inactivity of about 5 minutes while updating my notes for the Summerfaire schedule.
Unless it's something to do with a recent update to Firefox? I'm running Firefox on Windows 10.
PS - fortunately I saved this entry as I was again signed out in the couple of minutes taken to type it.