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I discovered I had a guest user account logged in when I tried to shut down and Lubuntu told me I couldn't. When I try to switch users from my administrator account to the guest account I am asked for a password. My friend, who had logged in as a guest, claims he did not create a password.

Ideally I'd like someone will tell me how to get into this guest account, but I will be satisfied if all I get is advice on the best way to shutdown and eliminate the guest account. Thanks!

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Note, I did try clicking through but it won't accept a blank password. Nor were our guesses successful. – Michael Bishop Nov 27 '12 at 21:41
Have you tried sudo shutdown now ? – Seth Nov 27 '12 at 22:25

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