After digging around to see if I could find another. conf file to adjust, I decided to go ahead and start over to determine which package update changed the mouse behavior. Through a process of elimination and a little common sense I found that the package update in question was:
If you normally never change these settings you probably would not have noticed a difference. I happen to use a roller-ball mouse and like to set it so that I can scroll anywhere on the screen without lifting my thumb. The default setting takes around three revolutions which my lazy thumb does not like heheh For now I am going to re-image and avoid that particular package update unless someone knows were this input driver gets its configuration.
I just wanted to throw this post up to get it on the radar and also throw the info I dug up just in case there are others going crazy trying to figure out why their mouse is acting up.