I work on many computers that have Norton Anti-virus installed and I must say it is a most inefficient program. Read on to an article I found from Jimmy Ruska's blog:
Norton AntiVirus is A Virus
The most precompiled program in all new computers IS a virus to anyone who knows anything about computers.
What Qualifies as A Virus
Uses Up Massive System Resources
DDOS "Zombies" viruses can use up tons of your CPU space while they send looping pings of invalid lengths to their coordinated servers of choice. They're no match to Norton AntiVirus though, which can easily use 40% of your CPU and a gross amount of Memory.
Fake Error Messages & Getting Your Credit Card Number
If you do not choose to activate the trial version of Norton. You still have their disgusting services activited and eating your computer resources. Every startup you will be hassled with "You're NOT PROTECTED AGAINST THE HORRIBLE HORRIBLE PROBLEMS THAT AWAIT YOU!! ACTIVATE THE TRIAL". This mortifies the average computer user that feels no confidence.
Once your trial period is up, you'll be given the same grossly inaccurate message once again that you need Norton AntiVirus or your computer is completely insecure. Either give norton your credit card number or face being scared into giving them it with each subsequent logon. Most computer users are not confident enough to delete their antivirus and don't know how to disable norton from startup.
Is Your Computer Secure Without Norton?
YES. You can use a powerful cocktail of programs that's even more secure and faster than the bloatware that is norton. You should really ask yourself, "Is it worth having my computer go slower to have Norton AntiVirus scan every file I look at and every program I run." Many people confuse hardware problems for their old computers as viruses and anecdotally fear removing the antivirus even if they don't download anything risky."
