it seems to be related to having feisty-backports enabled in /etc/apt/sources.list
changing contents of /etc/apt/sources.list to
-- deb http://security.ubuntu.com/ubuntu gutsy-security main restricted deb-src http://security.ubuntu.com/ubuntu gutsy-security main restricted deb http://security.ubuntu.com/ubuntu gutsy-security universe deb-src http://security.ubuntu.com/ubuntu gutsy-security universe deb http://security.ubuntu.com/ubuntu gutsy-security multiverse deb-src http://security.ubuntu.com/ubuntu gutsy-security multiverse deb http://archive.ubuntu.com/ubuntu/ gutsy main --
and re-running update-manager seems to fix the issue
it seems to be related to having feisty-backports enabled in /etc/apt/ sources. list
changing contents of /etc/apt/ sources. list to
-- security. ubuntu. com/ubuntu gutsy-security main restricted security. ubuntu. com/ubuntu gutsy-security main restricted security. ubuntu. com/ubuntu gutsy-security universe security. ubuntu. com/ubuntu gutsy-security universe security. ubuntu. com/ubuntu gutsy-security multiverse security. ubuntu. com/ubuntu gutsy-security multiverse archive. ubuntu. com/ubuntu/ gutsy main
deb http://
deb-src http://
deb http://
deb-src http://
deb http://
deb-src http://
deb http://
--
and re-running update-manager seems to fix the issue