The behavior is identical whether the PiTFT is seated directly on top of the Pi, or connected with a ribbon cable as shown below. Leads me to think its not the solder joints since its unlikely I would've screwed up the same pin exactly the same way on both connectors.

The intensity of the problem seems to vary over time - I tested it last night and was impressed because the cursor only jumped once or twice in ten minutes. Today, however, its back to skipping all over the place many times per second.
I've also checked the ribbon cable connecting the LCD to the board. It seemed to be slightly angled out, so I corrected it. The problem remains with full severity though.
Looking forward to any advice you can give.
Thank you.
(
Edit: more pics. click for hi-res.)
