I had user passwords set for two household users, plus an admin password. I know the admin password works. Either I forgot the two user passwords, or they don't work anymore. I tried to reset the two user passwords. I get a screen that requires a "master password" before resetting the user passwords. The hint for the master password is consistent with the admin password, but the reset procedure doesn't work. I enter the new user password and the screen "shudders" for a second or two, as if to say, "Are you kidding me?" Any thought or thoughts as to what I might be doing wrong and how to reset user passwords? Thanks.