In the event that the passwords information is lost, you should record all information in a separate text file somewhere else on your hard drive, or written down. You can easily copy and paste if you need to do so. If you are concerned about someone else looking at that file, you can compress it using a password. --------- Any idea on how/when the data disappear? What about the rest of your profile? Settings, bookmarks, history, passwords . . . . Are you using and programs that clean the hard drive? We do not recommend using other programs to clean Firefox because they could corrupt the files. Also, the browser can clean itself.