running virt-install with -vcpus 2 on a host with 8 cores (it's a dual quad core), results in: ERROR: Number of vcpus must be in the range of 1-1 As far as I can see virt-install queries libvirtd for the number of cpus. It seems to think there is only 1 cpu on the host, while it should show 8. Happy to run debugging/test packages or provide more info.
Changing version to '9' as part of upcoming Fedora 9 GA. More information and reason for this action is here: http://fedoraproject.org/wiki/BugZappers/HouseKeeping
*** This bug has been marked as a duplicate of bug 434570 ***