Hello. While I was installing Diablo 3, I was looking up how the Intel HD 3000 graphics card (I have a 2011 13" MacBook Pro) performs. After a couple forum threads on the Blizzard website, I have found that some people recommend to upgrade to Lion if using the HD 3000 because of "bugs with the graphics drivers." If I want to maximize my performance, should I upgrade from Snow Leopard (10.6.8) to Lion? Is it agreed that 10.6.8 has graphic driver bugs? Thanks!