Had a rather interesting epiphany the night before last. I asked my friend C to try out the spare laptop to see if it was only men with rough hands who could use it. And she could, and her hands are very soft.
So I watched her using the computer...and realised that she used just one finger on the mouse pad. Not two pointing gun fingers together. Just one, her index finger. A room poll proved the theory, so I tried it out. No more Peter Pointer on the pad, just Ruby Ring and it works! I'm online and on fire.