Looks like everything is back to normal, at least. Meanwhile I now have Firefox downloaded and am using it as an alternate browser. It seems to work really well (I like it!) although the version I've downloaded is missing some plug-ins that I'll have to add (like Flash Player). No biggie.
The upside to it all is that in an attempt to rectify the problem (before I knew it wasn't just me that was having it), I changed my Fine Grind blog template as a way of cleaning up the code. I actually like this new template better, but wouldn't have switched and discovered it if Internet Explorer hadn't gone wonky on me. Silver lining!