My disc had no problems at all, it just took awhile. I knew it would, because obviously alot of files would have to be shuttled around and settings migrated etc. I just was wondering how long other people's upgrades were. The reason I was wondering is because my sata drive controller has conflicts between the sata dvd drive and the hard drives, causing everything to run slow. The disc was fine and in fact everything worked pretty flawlessly. I of course backed everything up to another drive beforehand, of course I wouldn't trust all my data to a beta.