In Wired Connection settings save option is getting grayed out

http://askubuntu.com/questions/258876/in-wired-connection-settings-save-option-is-getting-grayed-out

I faced the same problem, the way around is to do it from command line.Go to the file /etc/network/interfaces and change it to

sudo vi interfaces

auto eth0
    iface eth0 inet static
    address xx.xx.xx.xx
    netmask xx.xx.xx.xx
    gateway xx.xx.xx.xx
    dns-nameservers xx.xx.xx.xx
    dns-search xx

where you have to fill the xx given by your ISP.

Then from commandline do

sudo ifup eth0