Final update on this. Whichever of Mixture's suggestions was the one, something worked and Safari is now OK. Thank you, sir! However, since using Iron, I've found that it loads and quits quicker than Safari, and I've found a theme for it that makes it easier for me to read the toolbar, and is a lot brighter than dull old Safari. So, thanks to Mixture and to the person who recommended SRW Iron.