f you are using open source software on your Mac, like Gimp and Inkscape and other X11 environment programs, be sure to install the Macports for 10.7 update to make sure they work properly with OS X Lion. If you already had Macports installed under Snow Leopard, it’s nice and simple. Just download the .dmg here and click on the installer. When it’s done, you’re good to go! 🙂