[ubuntu] System settings > User accounts Auto login switch won't work

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http://ubuntuforums.org – Oneiric Gnome 3 Under my name in upper righthand corner. System Settings > User Accounts Switch Auto Login I go thru the step to allow me to turn it ON. But it is turned OFF when I return. It will let me change my icon and password but not the auto login. The lock in the upper corner is open but the curser hover window says dialog is locked. Clicking does nothing. Any suggestion on how to fix this? TIA Dave (Hardware)