Updating ubuntu 8 04 to 8 1

N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.

N: See apt-secure(8) manpage for repository creation and user configuration details.

If I click in the right side of the screen, it clicks in the left!!

It shows in a unmanaged device scan as having the agent but does not show in a device list.I'm fairly new to Linux, and I'm having hard time diagnosing the problem (not to mention, Solve it). .action_button.action_button:active.action_button:hover.action_button:focus,.action_button:hover.action_button:focus .count,.action_button:hover .count.action_button:focus .count:before,.action_button:hover .count:bullet. Would appreciate any definitive assistance from someone who has experienced and resolved a similar situation TIA John (Dallas)post your here maybe their servers are busy or you just need to pick a different server for your updates from.In addition to the bugs listed below, this update includes all security updates from the Ubuntu Security Notice list affecting Ubuntu 16.04 LTS that were released up to and including July 19, 2016.