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[Julian Foad <1378396@xxxxxxxxxxxxxxxxxx>]

This blueprint is relevant:
https://blueprints.launchpad.net/ubuntu/+spec/guest-session-sane-
defaults

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https://bugs.launchpad.net/bugs/1378396

Title:
  Guest session needs to remind user that data will be deleted

Status in “lightdm” package in Ubuntu:
  New

Bug description:
  Ubuntu gives users a "guest session" that looks and feels pretty much
  like a regular session, but on logging out it deletes the user's data
  without adequate warning. This is a serious problem because users,
  even long-time users such as myself, may not expect this, and somebody
  they care about *will* lose important data. For examples, see bug
  #435930: the initial report, and comment #3, and comment #7. (Those
  examples are from before there was a warning dialogue at the start of
  the session, but that by itself surely won't prevent more
  occurrences.)

  A set of design changes to fix this bug properly would need to involve
  reminding the user at appropriate times while using the session that
  all data they store in the "home" directory is temporary. This could
  include changing the desktop theme and background to something
  visually different from a regular session; changes to the file-save
  and directory-browsing dialogs to remind users that Desktop and
  Documents and so on are not permanent storage locations, and more. I
  remember using SuSE Linux a few years ago, and you could log in as
  root, and the root session was visually distinguished in several ways
  as a reminder.

  The behaviour of a guest session should be specified in
  <https://wiki.ubuntu.com/SessionHandling> (see bug #882296, "No
  complete specification for how Ubuntu sessions are supposed to work").

  Bug #435930 and bug #1270788 ask for reminder messages at log-in and
  log-out time respectively, but I see those as only crude attempts to
  ameliorate the real problem.

  (I'm not sure what projects/packages this bug report should target:
  lightdm, gnome-session, Ayatana Design, ...)

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