Educational charity Raspberry Pi Foundation has released a version of Linux optimised for the 25 EUROS computer's ARM11 processor.
Called Raspbian,"this is the result of an enormous amount of hard work by Alex and Dom over the past couple of months,and replaces the existing Debian squeeze image as our recommended install,"said the Foundations."Notably,it is the first official image to take full advantage of the Raspberry Pi's floating point hardware for,amongst other things,much faster web browsing."
Source:
http://www.electronicsweekly.com/Articles/2012/07/19/54169/raspberry-pi-gets-raspbian-better-optimised-linux.htm
