Macbook Pro cursor jumping around

I have had the same problem, literally for years. Drove me nuts. Took it to the Genius bar more than once but, when I would try to demonstrate the problem, it would not fail in the store. The Geniuses said I was getting Bluetooth interference from my neighbors. Took the machine back home and, sure enough, it started failing again. Finally, at the urging of my wife - who was weary of listening to me cursing all the time - I bought a USB keyboard (Das) for $150, the kind that makes each keystroke sound like old-fashioned IBM electric typewriters. Plugged it in, with an Apple Bluetooth track pad. Voila! Problem vanished.

Moral of this story: The Mac Pro built-in keyboard is crap if you are a fast typist. It doesn't matter how you adjust the keystrokes and pressure, it is total crap. I am angry with Apple about this because the jumping cursor has caused me many hours of frustration. (I am a writer, an author). Anyway, now you know. Go buy a USB keyboard. I have the Das, but maybe others work as well. Bottom line is that the Apple built-in keyboard on the MacBook Pro is glitchy.