I have the specs listed above and leopard. Ever since i upgraded to leopard, expose has been very laggy when i have more than 5 or 6 things open. Tiger use to handle 25+ with ease. Is this just a glitch everyone is experiencing that will be fixed soon or is it just me? THanks. and no, its not my videocard. 8600GT with 128 ram that can run Oblivion in bootcamp at medium-high settings at 30+ fps can certainly handle a little expose animation where windows move around the screen in 2d lol.