Peter Norton is a really great guy in the world of PCs. His works were trustworthy and solid. As all things do tend to devolve, the marketing of Norton in or about the year 2000 saw a shift from his high standards to passable (or not) products with his name blazoned on the packages in hopes it would boost market share.
Today, with an over 5 year slide of quality issues and gaffes, Symantec still milks the name since some remember what good products Peter had.
McAfee didn't do much better when Windows ME was tossed into the market. Their AV wasn't ready then but slowly recovered. I'm almost betting that they had lost some braintrust (employees) and were trying to get by with as little staff as possible during those years.
Today we have some issues with products that attempt to do far too much in one package and end up with chinks in the armor. Also, Symantec ignored spyware for years because (quote from Symantec staffer) "it's not a virus."
-> In closing, you have choices.