I had checked the event logs but all it ever said was that IE had stopped working (duh!).
I did disable add-ons, first all, then reactivated all but one. That seemed to do the trick as far as "stopped working messages" although the little pinwheel occasionally popped up indicating "something" was still occurring unseen or in the background.
Interestingly enough, recent problems with a backup program due to a com service not occurring, when it was restored and activated the result ...so far... was clean exits from IE.
Problem with long response delays in Favorites management and Windows Explorer right clicks seems to be hanging on still.
Thanks for your help so far...will let you know resolutions on other problems.
Instead of removing addons, have you tried running IE with addons disabled?
Have you checked the event logs for additional information?