I don't have an external mouse hooked up at the moment.  I am having a little problem with the regular touchpad or the one you use with your finger between the gbh keys.  If you leave it alone it will stay in one spot.  However, once you start typing or doing anything that involves touching the laptop the mouse moves.  I am 99.9% sure this isn't a software or driver issue.  The only thing I can think of is that it needs to be cleaned.  Anyone have any other ideas or suggestions?