This is also a problem with the live CDs, where I don't think it's possible to amend the xorg.conf file at all so this is a show stopper bug for the live CD. Tested Edubuntu on a 1.5Ghz PowerBook 12" (however last time I checked it also affected the Ubuntu live CDs) -- Appletouch trackpad unbearably slow https://launchpad.net/bugs/33762