I just tried to install Fedora 7 from the DVD iso image as a fully virtual HVM under a Fedora Core 6 host (all x86_64). I get to the initial boot screen, but then it can't find a local CDROM. I'm presuming whatever hardware is emulated for this isn't recognized by the installer. I'm proceeding now with a network HTTP install and I'll see how that goes. If this is actually a bug, what the heck is the component it should be reported again? :-).