My collegue who is sitting adjacent to me is using firefox for browsing. Everyday before we login we have to type the login and password to get access to the internet. One day i typed my password in his system and logged in, now he knows my password. Is there is any facility in the firefox to see another person's login password who has signed in earlier. One more thing, in case of my absence, how to identify whether someone has logged in before using my login ID. Please tell me how to check this.