root@Computer:/etc/apt # apt-get update Get:1 http://us.archive.ubuntu.com hoary Release.gpg [189B] Get:2 http://us.archive.ubuntu.com hoary-updates Release.gpg [189B] Get:3 http://security.ubuntu.com hoary-security Release.gpg [189B] Get:4 http://archive.ubuntu.com hoary Release.gpg [189B] Hit http://us.archive.ubuntu.com hoary Release Hit http://security.ubuntu.com hoary-security Release Hit http://archive.ubuntu.com hoary Release Hit http://us.archive.ubuntu.com hoary-updates Release Ign http://us.archive.ubuntu.com hoary-updates Release Hit http://security.ubuntu.com hoary-security/main Packages Hit http://archive.ubuntu.com hoary/multiverse Packages Hit http://us.archive.ubuntu.com hoary/main Packages Hit http://security.ubuntu.com hoary-security/restricted Packages Hit http://security.ubuntu.com hoary-security/main Sources Hit http://archive.ubuntu.com hoary/multiverse Sources Hit http://us.archive.ubuntu.com hoary/restricted Packages Hit http://security.ubuntu.com hoary-security/restricted Sources Hit http://security.ubuntu.com hoary-security/universe Packages Hit http://security.ubuntu.com hoary-security/universe Sources Hit http://us.archive.ubuntu.com hoary/main Sources Hit http://us.archive.ubuntu.com hoary/restricted Sources Hit http://us.archive.ubuntu.com hoary/universe Packages Hit http://us.archive.ubuntu.com hoary/universe Sources Hit http://us.archive.ubuntu.com hoary-updates/main Packages Hit http://us.archive.ubuntu.com hoary-updates/restricted Packages Hit http://us.archive.ubuntu.com hoary-updates/main Sources Hit http://us.archive.ubuntu.com hoary-updates/restricted Sources Fetched 192B in 2s (67B/s) Reading package lists... Done W: GPG error: http://us.archive.ubuntu.com hoary-updates Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <ftpmaster@ubuntu.com> W: You may want to run apt-get update to correct these problems root@Computer:/etc/apt # apt-get upgrade Reading package lists... Done Building dependency tree... Done 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded