I opened Network Connections in Ubuntu 12.04 LTS to change my DNS to Google Public DNS. However, when I saw the options under the "Wired" tab, I saw Wired connection 1 with an entry under Last Used saying it was used 3 days ago. I only use a wireless connection and when I checked under the Wireless icon in the upper right hand counter the Wired connection was disabled. This worries me. Any idea as to why Ubuntu would say this?