Just got the latest Photoshop version CS4 after busily loading all my brushes set about a quick caricature of Bat Hilliard a fellow NCN member who is from North Carolina USA. One of the politest, humble guys you're likely to meet - far too nice - probably has several axe murderers in his family background.
CS4 seems to work OK, several modifications to the GUI and handling of windows - I don't know if it is the quantum leap I was expecting or worth the upgrade. I'm just a hopeless victim when it comes to updating software !!!