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I'm not sure this is a bug in unity-greeter, most likely it is another
After using the guest session feature (log in as guest) a couple of
times I find the following cruft on my system. This shouldn't happen.
$ grep guest /etc/shadow
Other files seem to be affected as well.
$ sudo rgrep -l guest-ceyM7L /etc/
I'm running unity-greeter 14.04.11-0ubuntu1 on trusty.
** Affects: lightdm (Ubuntu)
** Tags: trusty
guest session leaves cruft behind
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