Ubuntu 14.04 network icon gone after the first reboot of a new installation

Wireless was working fine all this time, its just the missing indicator icon.

Here is what worked for me. Unity -> Startup Applications - and check "Indicator Application" (if its not already checked.) Next install following two packages: indicator-applet and indicator-network.

Code:

sudo apt-get install indicator-applet indicator-network

reboot and wifi icon should pop-up.
I am using Ubuntu 14.04.1 64bit on DellLatitude E7440

source: http://ubuntuforums.org/showthread.php?t=2251198&page=2