After disbling the touchpad (finally) the mouse problem
appeared to have been fixed. momentarily. :(
That was a good suggestion however, to eliminate the possibility of compatibility problems between the mouse and touchpad.
So I thought "Now what can I do?".
I have changed the batteries
I disabled the scroll wheel by physically removing the emitter (it had a loose emitter) -- read more below...
I have disabled the touchpad
I even tried changing drivers for the mouse.
All to no avail. Each time I try something it appears to work, but for just a little while. Sooner or later, the trouble begins once again.
It seemed for a while to only happen ewhen I was typing. That made me paranoid that someone slipped me a
Digital Bomb I do go to places on the web, that are shall we say 'not suitable for all audiences'

And I download a lot of junk from the web as well.
I have run AV scans on everything on my computer, the two SD cards I use for storage, it was driving me crazy!
I even thought that MS could be behind it, for all of my activity in closing down all of the MS Spyware on WIndows 10. :P
but lo-and-behold....
remember when I said I 'fixed' the scroll wheel? It turns out I only did half of the job. I left the detector in place.
The last thing I did was to remove the detector for the scroll wheel. That was hours ago, and I have been writing some code since
that time with no
apparent trouble from the mouse.