I just bought an aluminum macbook5,1 and successfully installed kubuntu 8.10 intrepid ibex onto it.
Mostly, I used this wiki page: https://help.ubuntu.com/community/MacBook Aluminum
and this forum thread: http://ubuntuforums.org/showthread.php?t=947947
UPDATE 2009-01-08: I’ve got the macbook back, now with it’s 3rd logic board and 2nd magsafe board. The tech said he thinks there was a ‘bad batch’ of [...]