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Found Solution for How To Permanently Hide Norton Toolbar in Safari
I posted the question some months ago, "Is there a way to permanently hide Norton toolbar in Safari, and came back to post the only solution, but the thread has now been locked for replies without a solution, so here it is:
Searched hi and low and found there simply is no straightforward way to keep Norton toolbar from launching itself each time Safari launches. Also while searching for many hours over months for the answer, that Norton toolbar annoyed me enough that it was easy to decide to just uninstall it when I found this:
Safari> preferences> extensions> Norton> uninstall> RELIEF!