Work it did, but it took about a day and a half to work, have no idea what it was doing. That's on a modest machine I know i7-950 quad, 32GB RAM, root on 128GB SSD (Intel, I think). I was hoping to have it sooner than that.
Strange repos, like rpmfusion so graphics work or adobe because people have things in flash (work things) I have to see. I do have those. Maybe that's the issue, if I didn't need to USE the system, I could do without them :-(
Thanks for the warning, maybe I can disable, upgrade, then put in the needed things from single user mode.