Completed a successful upgraded from FC3 to FC4 (Stentz) using the x86 binary DVD first thing in the morning. sessreg was failing during GDM login till I removed my local ICEAuthority file. No other issues so far.
5 minutes with the GNOME desktop (with the new clearlooks theme) and 5 yawns later, I was back to my previous build of e17 CVS. 🙂
There is a wiki up for people doing a YUM based upgrade from previous releases to FC4 at http://fedoraproject.org/wiki/YumUpgradeFaq
Enlightenment e17 (EFL+Window Manager) is now in FreeBSD ports.