I've messed with the dvd iso for awhile. no luck, I've a really standard system - intel 945g, 1 sata drive, one dvd. fc5 works fine.
The only remotely non-standard thing is an lvm volume - which is not root:
df Filesystem 1K-blocks Used Available Use% Mounted on /dev/sda5 34064236 10790280 21515644 34% / /dev/sda1 256666 44709 198705 19% /boot tmpfs 507172 0 507172 0% /dev/shm /dev/mapper/video--vol-video 253467728 132785556 120682172 53% /video
fc6-pre starts up, asks for keyboard, then fails just after it starts looking for prio installs.
Does it work for anyone else?
sean