I don't know if this is relevant, but I've just been on the phone for a hile, and during that period the scrolling has decided to fix itself. This is something that always seems to happen, but of course, I don't always have time to wait. Any1 know an explanation for why it might fix itself after a waiting period.
It's what computers do

Have you tried rebooting since? It may still happen on a restart...
Sometimes it fixes after a reboot, and sometimes not.
But either way, whenever I start a session it's jerky.
thx for the adivce tho. much appreciated as always.
if any1 needs any tips on fashion or hairstyles, then I'm your man.