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I don't want to upgrade to the new release, and I don't want to have the notification icon about the upgrade (red triangle with exclamation mark in it) sit on the tray constantly.

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See also related question… for quelling the update notices in general, not only upgrades. – Bryce Jun 27 '12 at 5:55
up vote 16 down vote accepted
  • Open Update Manages and click on Settings .

enter image description here

  • Go to Updates tab and change 'Show new distribution releases' to never.

enter image description here

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In the 'Software Sources' go to 'Updates' tab and set 'Show New Distribution Releases' to 'Never' as shown below. I use Natty but it will be same in Lucid and Maverick too.


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You should go to software center --> edit--> software sources

Then on the third tab (updates) go to "release upgrade" (last one) and change it to "never"

edit : what the others said above with glorious images :D

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If you don't want to use the GUI, in Precise another way to do it is to edit /etc/update-manager/release-upgrades:

# Default behavior for the release upgrader.

# Default prompting behavior, valid options:
#  never  - Never check for a new release.
#  normal - Check to see if a new release is available.  If more than one new
#           release is found, the release upgrader will attempt to upgrade to
#           the release that immediately succeeds the currently-running
#           release.
#  lts    - Check to see if a new LTS release is available.  The upgrader
#           will attempt to upgrade to the first LTS release available after
#           the currently-running one.  Note that this option should not be
#           used if the currently-running release is not itself an LTS
#           release, since in that case the upgrader won't be able to
#           determine if a newer release is available.

Then change the last line to say:

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