I have the late 2007 black Macbook (http://www.everymac.com/systems/app...-2.2-black-13-late-2007-santa-rosa-specs.html) It has 4GB of RAM and I recently did a clean install of OS X Lion. Any kind of graphics processes is a little laggy compared to Snow Leopard. Some things I've noticed are- -Launch pad: A little hitchy when opened/scrolling. The icons jiggle when you hold down the ALT-key but it lags as it jiggles. -YouTube: Videos are a little laggy. -Screensaver: Also laggy. -No ripple effect from widgets. Running in 32-bit/64-bit mode doesn't change anything. Anyone have any suggestions?