I have same issue as Buccaneer. pointer is normal civ5 at copyright screen, and once moved it goes to my normal white pointer. Windows XP, nvidea 9400gt. updated card with latest drivers, but I think it's the game because it started doing it after I changed the intro movie setting from 0 to 1.
I am using full screen game, so I push the window button on my keyboard (between ctrl and alt) to minimize, and then I click on the game to maximize and the curser is back to Civ5 curser and I can click "continue".