might be accidental touching of the touchpad?
Just a thought
I am running Snow Leopard on a new MacBook Pro.
I have noticed that often when I am typing, the curser will jump to another location. So, I might be typing on a line and then suddenly, the curser will jump to a line, usually above the line that I had been typing on.
Anyone else have a problem like this and does any one know how to fix this?
Any ideas would be appreciated!