Well, I guess I spoke too soon. Now, the one attched to my computer (the original one), is acting flakey, and it is not a keyboard mapping issue, this time. I have not tried the other two.
A couple of things have started happening:
1. As I said previously, I use Alt+F4 to close Kodi....and I use Ctrl+Alt+Z to open Kodi. Now, when I click the button to open Kodi, it appears to be sending both of these combinations, because I get the Windows shutdown option window and Kodi opens behind it.
2. When holding down the buttons that are assigned the left, right, up and down keys, I can no longer advance more than one item per button press and hold...using the program guide as an example: I was used to being able to hold these buttons down and scroll around...now it will only move one field.
Please note, these are annoyances, not gamebreakers.
Any ideas.