It's one of those bloatware things people install by the dozens to keep their PC "clean". And then wonder why it still isn't faster when they have three dozen bloatware/virus/whatever scanners running in the background.
When they mess up, reinstall their Windows, let them loose all their data and tell them it will not happen again if they're careful and watch what they install, that'll teach them.

Also good for you Adrian, Norton is one of those bloatwares as well, I hope you don't use zone alarm now, it was so weird when my friend had to close it down before playing some game because somehow the game could never start as long as the firewall ran.
Seriously, there are so many alternatives, why would anyone keep such bloatware?
rant over