This note is just to confirm that the support period for Ubuntu 11.04 (Natty Narwhal) formally ends on October 28, 2012 and Ubuntu Security Notices no longer includes information or updated packages for Ubuntu 11.04.
The supported upgrade path from Ubuntu 11.04 is via Ubuntu 11.10 (Oneiric Ocelot). Instructions and caveats for the upgrade may be found at https://help.ubuntu.com/community/OneiricUpgrades. Note that upgrades to version 11.10 and beyond are only supported in multiple steps, via an upgrade first to 11.10, then to 12.04. Both Ubuntu 11.10 and Ubuntu 12.04 continue to be actively supported with security updates and select high-impact bug fixes. All announcements of official security updates for Ubuntu releases are sent to the ubuntu-security-announce mailing list, information about which may be found at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security-announce.
Since its launch in October 2004 Ubuntu has become one of the most highly regarded Linux distributions with millions of users in homes, schools, businesses and governments around the world. Ubuntu is Open Source software, costs nothing to download, and users are free to customize or alter their software in order to meet their needs.
Originally posted to the ubuntu-annouce mailing list on Sun Oct 28 16:24:47 UTC 2012 by Kate Stewart