It jumps all over, usually within the text field. I've got Windows XP Pro SP2, McAfee Suite, Adaware... all providing a clean bill of health.
whoops! A Light jut went on in my head!
There is a distinct possibility that when I am typing I inadvertently tap the laptops cursor pad, thus refocusing the cursor where ever I had left the cursor, usually in the text field. I will look into adjusting the touchpad's sensitivity, or maybe disabling it as I have a cordless optical/mouse. I generally only use the touchpad when the terrain is too difficult for the optical mouse. Thus far this entire parragraph had had no errors. I've been carefull not to touch the touchpad at all.
Hey I think you've solved my problem. Your a genius!!