Fix for Atheros Ar 8162 In Ubuntu 12.04

To fix the Network problem of Ubuntu 12.04 with Dell Inspiron 12.04 (with Network card Atheros ar8162)
Try the following

1)      Download  compat-wireless-2012-02-28-p.tar.bz2 from here 
                   (download the exact file from the list)
2)      Copy the downloaded file to your home
3)      Then open the Terminal (Ctrl +alt+t) and run the following Commands one by one