Customer Problems

As I sit here with a new computer and a NIS disc in hand to install, the customer problems with security software makes me pause.  I saw what I consider low user ratings for NIS and went looking for a product with higher customer satisfaction.  The problem is I couldn't find any!  None of them have very high user ratings.  Can someone give me some insight into why these products generate such low customer satisfaction rates?  Thank you for time and experience.