Peter Norton
Ray8 said "Norton has been one of the most hated products since inception."
When Dos 6.2 was the main OS, Peter Norton was highly regarded. When they were bought out by Symantec is when the quality began to degrade. Symantec has improved the product in the last 24 months. It is now decent quality. Many programmers write code that imbeds itself and is a real task to uninstall. One example is a widely held backup program. I had to do a clean install to "really" get rid of it.