New Keyboard, erratic mouse behavior

Thanks for the suggestions.

I checked the System Preferences/Mouse settings, though nothing's changed there.

Cleaned the mouse, as described. Used some canned air as well, and in addition, a bit of DeOxit on the mouse to keyboard & keyboard to computer USB connections, in case there was any corrosion.

Did the hardware test - no trouble found. But interestingly, when the test concluded I couldn't restart because the mouse was totally acting acting up: the same jerky cursor movement, and clicking on the restart button (or anything) had no effect. Plugged in the old keyboard - same problem. Finally got "lucky" and clicking on the restart button worked. Once I logged in again, it was acting normal.

I'm wondering if the problem is with the mouse at this point. Do you know if there's a way to take the mouse apart to clean it more thoroughly? (Doesn't seem to be from what I can see.) Also, should the lens on the underneath side be cleaned as well?

What's weird is this has been an occasional, intermittent problem, and it seems odd that when in the hardware test screen, the mouse wouldn't work at all, and then behaved normally when I logged in again.

Thanks for the link to the detailed video on cleaning the mouse. Boy, the older Apple mouse was a lot easier to clean. Seems like they ought to redesign the "mighty" mouse, as this is periodic maintenance, and we shouldn't have to break the thing apart to clean it.

One last thought: cleaning the mouse should take care of any scrolling issues, but I wonder if the problems I'm having (jerky cursor movement when moving mouse across pad; not being able to select something when clicking on it), might be due to something else? Guess I won't know till I try. As a test, I plugged the mouse into the back of the computer (instead of the keyboard), and so far, I haven't had the above problems...

Thanks

I do have a plain mouse pad, not a glossy one.

Just curious: isn't the movement of the cursor, as you move the mighty mouse across the pad, triggered by the red light underneath, and the scroll ball on top controls vertical and horizontal scrolling only? And if that's the case, cleaning the dust off the rollers, whether taking it apart or not, would only affect scrolling? Again, my problem is occasional jumpy cursor movement and not being able to select an item when clicking on it.

Interestingly, with the mighty mouse plugged into the back of the computer, I haven't had any of the above problems. I wonder if the mouse needs more power than the keyboard can deliver? That doesn't make sense though, because the USB connection on the keyboard is typically where you would plug in the mouse.