When there is a freeze and there is no re-set button, you have to press and hold in the Power Button until it either shuts off, or re-starts (the same way you'd re-start a PC if it freezes). I wish the re-set button would come back on both Mac and PCs. Sure, XP and X are very stable, but on the rare occasion where you have to do a quick re-set, a re-set button would come in handy.