I've noticed that if I put my finger in 1 Particular Place on my igesture, the cursor wobbles up-and-down vertically. It's much worse if I only use one finger instead of two for normal pointing. Diagnostics come out OK. Any ideas what might be causing this?
Also I forgot to mention that every now and then the cursor seems to jump around several inches on my screen, or even halfway across it. It's probably related.