Installed YDL 6 on the new PS3 now... I noticed that on a fresh install without doing anything and booting back to the Game OS, the Dualshock 3 wouldn't connect over bluetooth until I rebooted the Game OS. I think I'll remove bluetooth support completely from this PS3 until this problem is resolved.
Anyway, my first steps after installing:
* switch to Gnome instead of Enlightment at the login screen by clicking on Session
* switch to non-bordered video mode in /etc/yaboot.conf (131)
* add fedora-extras.repo and ps3bodega.repo
* add protect=1 to yellowdog-base.repo, yellowdog-extras.repo, and yellowdog-updates.repo
* yum install yum-protectbase
* yum erase bluez-libs bluez-utils (get rid of bluetooth support)
* disable screensaver in System->Preferences
* yum update
* System -> Preferences -> More Preferences -> Sessions: disabled gnome-volume-manager, gnome-power-manager, bt-applet, puplet
* Started disabling services (thinking I'll keep printing support on this one): cpuspeed, isdn, mcstrans, mdmonitor, mouse-emulation, pbbuttonssd, pcscd, restorecond, sendmail, ip6tables, auditd, acpid, atd, anacron, smartd, yum-updatesd (all disabled in both runlevels 3 and 5)
* Added the noatime mod to /etc/fstab
* Moved everything from one Gnome panel to the other and deleted the unused panel
Still more to do ... but that's a start!