I just received my Dell Inspiron 17R laptop with Windows 7.  I am loving the laptop, however, the keyboard seems extra sensitive to me.  In the middle of what I'm typing, the cursor will jump back a line or two and start inserting type there instead of where it was previously.  I thought I was maybe dragging my hand across the mouse window while typing to cause this, but I've been typing with my hands raised above this and it is still doing this.

Is this a defect or are these keyboards really just that sensitive?