Well, my HP laptop (connected to an external Dell flat panel) seems to have this disappearing mouse issue. I thought previously it was related to the new NVIDIA video driver, so I have been going back and forth with the driver on each successive microsoft and hp update. I still don’t know if it is a Microsoft Vista bug, an HP Bug or what?
However I do have a fix!
Go to control panel and enable mouse trails, yes those annoying things that make your mouse look like is stumbling across the screen, but turn them down to as short as they will go and you won’t know they are on and it will fix the problem.
Really this is how we fix a disappearing mouse?! Come on Bill?!