I asked on the forums before for the full installer download links of v21.4.0.13 as I don't want to install 21.3.0.12 then have to do a 250MB of update just to get to the latest version.
So here I bring you the download links to the latest version. Enjoy
Antivirus:
http://buy-download.norton.com/downloads/2014/21.4/NISNAV/US/NAV-ESD-21.4.0.13-EN.exe
Internet Security:
http://buy-download.norton.com/downloads/2014/21.4/NISNAV/US/NIS-ESD-21.4.0.13-EN.exe