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https://bugs.launchpad.net/bugs/882255
Title:
No administrative actions possible (password refused) after enabling
passwordless login
To manage
Public bug reported:
If I choose not to have a password for my operating account, every
operation fails if it needs root access. Reproducable even on a newly
set up machine. See: http://ubuntuforums.org/showthread.php?t=1862543
Release: 11.10
** Affects: ubuntu
Importance: Undecided