Recently my network lost contact with my NAS. At roughly the same time, my PC spontaneously started making me log in, not as Rich, but as Administrator. I told a friend of mine in IT about these issues, and he suggested logging back in as Rich. I tried that, but something happened, and somehow the Administrator user disappeared and my username had changed to Rich/Administrator. I have had no luck re-creating a plain Rich and a plain Administrator account. Anyway, when I finally booted up, I discovered that all my settings had been trashed and returned to the defaults. At the same time, Firefox started installing its latest version. Among all my other settings that went to default, so did my bookmarks disappear. I've tried everything to locate my bookmarks, but to no avail. Please advise.