I have a friend who used to work for Symantec. The guys there use Norton 2002 or 2003 (forget which one) because "it's the last one that actually worked".
Me, I got a free copy of Norton Corporate from school. Running for 5 years now, no pop-ups, no annoyances, does everything behind the scenes. I even forget that it's there.
So Norton Corporate and Norton Ghost are probably the only worth while products out of that company. Avoid everything else like the plague.