Just maxed my ram to 3GB today. Installed a Kingston 1x2GB chip. I notice no difference in speed, and when I click on "About this Mac", it literally takes 45 seconds for the window to pop up. When it pops up, it shows I have 3GB of DDR2 667 RAM, but it sure isn't acting like it. PS CS3, Firefox, etc all open at the same speed as before. Any thoughts?