I'm always tempted to try PreUpgrade, but then I see stuff like the (now) 6-page thread at the Fedora forums, "F17: Worst upgrade ever?" Anyway, a fresh installation isn't all that difficult, and it seems like I always learn something new. Besides, I'm weird, so I think doing installations is fun.
But it's good to know that PreUpgrade works out fine for some people. I might try it out one day.
OK, yesterday I used PreUpgrade to upgrade from F16 to F17. Absolutely no problem! The upgrade lasted some time and after you have some common post-upgrade tasks to do, these additional steps are recommended to complete the process (see the link to the PreUgrade page in one of my post above for these), but the process was perfectly done! As the last times.
Just, I never do the upgrade in the first days after the release. I prefer to wait for some weeks in case there are some problems to resolve... Till now, I never have problem with PreUgrade, at least for now.
P.S.= About GNOME 3, I guess you know my view on it... Crap! Again, the only modern, usable, desktop in the Linux/BSD world, and in par with Win7, is KDE 4 with the desktop view.
K.I.S.S. ===> "Keep It Simple, Stupid"
"Simplicity is the ultimate sophistication." (Leonardo da Vinci)
"Everything should be made as simple as possible, but no simpler." (Albert Einstein)