Dropbox deleted some of my favorite photos. Have you looked at all your old pictures lately and checked if they are still there? I have, and they were not. Of course Dropbox denies it is their fault, but no other program routinely accessed my pictures. I am not alone with this problem. It must have happened some time between the summer of 2015, when I put my pictures on Dropbox, and the summer of 2016, when Time Machine last corrupted its backups and had to start over, thereby deleting my las...