We headed out early this morning to pick up the floor sander at Lowe's (they don't take reservations, and today was meant to be the day). The sander is clearly made for even floors without protrusions, which is not what you normally find in an old house like Gunk Haus. The consequence was that the sand paper disks would get stuck on nail heads and floor board edges, and get shredded to pieces.
By noon we had already returned the sander after E! had gone over the entire floor once. We never had the goal to get a squeaky clean floor, but take off (mostly) the paint on the floor, and to smoothen the ridges. It turned out pretty good, although E! spent a good amount of time on her knees with the palm sander doing touch up sanding.