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OK, so my husband and I have had Ubuntu 13.04 I believe for about a week now, or whenever they released it. Yesterday, turn on the computer and his "user" and everything with it, was gone. Mine, still very much in tact, however, the root password was changed.
I have tried changing the password via the terminal after I tried removing it through the advanced root re-write option I found on the net, it showed there wasn't an encrypted password to even remove.
Now, I have been trying to create a USB start up disk so I can re-install Ubuntu, but I still do not have a root password apparently. This is obviously not my "user" password, as I have tried that. I've tried every password I have ever used...nothing.