A few days ago I loaded an install disk for Ubuntu into my Macbook Pro.  I booted up from the DVD drive and it loaded in beautifully.  I thought that I might back up the drive and run bootcamp to create a dual boot machine.  Then I heard that the bootcamp beta license will expire as of 10.5 being released...in just a couple of days.  Presumably a new non-beta version of bootcamp will be included in 10.5...so I will wait.