I've tried using liveusb-creator with three different Frdora Live .iso images: F12-i686, F12-x86_64 and F12-x86_64. The 64-bit images fail to boot with a short message about "incomplete ramdrive", while the i686 image fails with "uncompression error".

Hardware is a homebuilt Asus P6T, i7-930, 12GB system.

The system boots just fine from CDs created from those images, but takes a very long time to boot and I was hoping to use liveusb-creator to speed up boot time.

Any suggestions on what to try?