My laptop has an annoying problem. When I'm writing, the cursor likes to jump. I would be writing a sentence and the next thing I know, my cursor jumps to another sentence. Or jump halfway down the page. This I don't mind much, but sometimes it highlights whole paragraphs and deletes them.

It's not the mouse, not the touchpad, and not microsoft word: it's the keyboard. Is it dirty or should I just return this darn thing?