Linux on your Intel Mac

Linux Mint Debian 201204 released

http://blog.linuxmint.com/?p=1979

http://mac.linux.be/linux-mint-debian-201204-released

This release features three of the best Linux desktops available at the moment: The traditional and functional MATE 1.2 desktop, the innovative and beautiful Cinnamon 1.4 and the lightweight and rock-solid Xfce 4.8.

Both the MATE/Cinnamon and Xfce editions use the MDM display manager. MDM will look familiar to many people, as it brings back GDM 2.20 and all its features: Remote login, configuration tools, fast-user switching, theme-ability, language selection…etc

Ubuntu 12.04 LTS (Long-Term Support). Code-named 'Precise Pangolin', 12.04

https://lists.ubuntu.com/archives/ubuntu-announce/2012-April/000159.html