The "Crashguard" type programs may cause conflicts all out of proportion to their value, but the basic Norton Utilities program doesn't usually.
It was my understanding that NU version 3.0 had more than its share of problems, but NU 2.0 which I am still running on Win 95 isn't too bad unless, as is now the case on my computer, you are running out of hard drive real estate. I don't shut my computer down unless I have to these days because the virus checker in NU 2.0 gets a little confused on startup and eats up half of the remaining memory sometimes.
Does anyone see any value to the Crashguard type programs? -john-