donaldjackson wrote:...
I furnished information about my machine early on in this discussion so that anyone who tried to help would be able to tell if the problem is that the Norton Security Suite is too much of a resources hog to run on my old machine and leave any for applications I want to run. I still wonder if that is the case, and whether I will end up finding suitable protection that doesn't use up most or all of my processor.
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Well after seeing your machine specs, I would say the #1 problem is the limited 1279 Mb RAM, along with the low 1.6 GHz single-core processor speed. You're basically lucky you can do anything worthwhile on that machine with any antivirus product installed. Even if an antivirus product used minimal RAM, you will always get some kind of noticeable delay or the not repsonding issue because of the low processor speed (and nearly constant swapping RAM to pagefile).
Too bad nothing has helped, as Norton is a great av product for computers that meet the realistic specs.