Well, I am currently posting from my CS470 class on my iBook G4 running Ubuntu Dapper Drake (RC), it is supposed to be stable in the next few days, and I must say that this does nothing short of kick ass. Everything functioned flawlessly (minus the Airport Extreme, but that was expected and the beta driver functions rather well) and I couldn't be happier with it. .... i dunno, just posting to post....
/me