Keep in mind that complaints are made by those who experience problems with a program. Many people use Norton and it works fine for them.
You have a lot of options.
1) If you like Norton and it works for you keep it.
2) Investigate other security programs-there are many to choose from. I use Eset Smart Security and have no complaints about it. I know people who swear that Kaspersky is the best security program. At one time I did use Kaspersky and it worked well for me. A few of the others are Trend Micro, Panda, BitDefender and McAfee. I cannot comment on the first 3 because I have no experience with them. McAfee caused to many problems for me so I will never use it again.
The thing to remember is that there is no one-size-fits-all when it comes to security products. What works well for one person may not play nice with your system. (this was the case when I attempted to use McAfee long ago).
What I suggest is that you research what is available. Narrow down your choices. Before you purchase anything take advantage of the trial "try before you buy" that the major players offer. This will give you a chance to evaluate the program AND to find out if it does play nice with your computer. If you have to provide an email address when downloading or installing and you want to purchase the product wait until the trial is almost set to expire. You may get a "special offer" to buy at a discount.
3) Free products. These will sometimes lack a few of the features that the paid versions have but will still give your system the protection it needs. A list of the free products recommended by BC can be found here: http://www.bleepingcomputer.com/forums/topic366982.html*edited to correct a spelling error*
Edited by Queen-Evie, 29 December 2011 - 04:35 PM.