Vista - Cursor errors.

I've had this problem since I got my new Toshiba Qosmio laptop.

I will be in the middle of typing something, and if my cursor is somewhere else in the text, it will quickly make me start typing there. 'Causing me to type the end of a sentence in the middle of a completely different one.

I've read about how the cursor jumps around and how it could possibly be because I'm softly touching the touchpad. But the thing is, I am not.
I have my hands positioned right on the outside of the touchpad and keep my hands levitated so that only my fingertips touch the keys.

It's quite irritating when I'm typing school assignments.

I usually use my Wacom Tablet as a mouse, and I cannot figure out how to shut off the touchpad in case it is that.

What I'm asking is, is there something wrong with a driver in my computer or is it my touchpad?