Gutsy on Dual Boot: In round numbers, it took me an hour to download Ubuntu 7.10 via BitTorrent.  About 15 minutes to burn a CD.  Another 15 minutes to install.[I installed it Sunday. Basic install took about as long as Sam’s. I used a mounted ISO image, so no burning. No surprise. Mine is a virtual machine though… Didn’t take too long to get Rails up and running. Interesting.]
Source: Sam Ruby