Hello, FWIW, I've had a macbook pro running fine under Ubuntu. The procedure was pretty straight forward and various useful pointers may be found here: http://ubuntuforums.org/showthread.php?t=198453 Using rEFIt avoided elilo problems. All worked well so I can't see any obvious proble using Ubuntu on an Intel based Xserve. Pete -- The Wellcome Trust Sanger Institute is operated by Genome Research Limited, a charity registered in England with number 1021457 and a company registered in England with number 2742969, whose registered office is 215 Euston Road, London, NW1 2BE.