Dell laptop cursor jumps around when typing text

[dad]

The focus of my cursor on my Dell laptop will often jump to the another spot on the screen when I am in the middle of typing a sentence. I cannot get through typing two sentences without this issue of jumping around happening. This happens when I am typing text in any program. Is there any way to fix this?
Model
Dell Latitude D620

[hobbit709]

1. Are you accidentally

touching the mousepad as you type. One of the problems with those touch sensitive pads is that they are extremely touchy.

[democracyindanger]

2. I bet your thumb is

brushing against the touchpad and you don't even notice it. Try putting several sheets of paper, like post-it notes, over the pad so it's blocked from sensing anything, and try typing. If you don't have a problem doing that, then it's definitely some part of your hand. Fiddle with the touchpad options in Control Panel and see if there's a Mouse setting tab called 'Tapping,' and if there's a checkbox that says "Disable while typing."