It would be nice if the curl protocol support could be enabled for qemu. Maybe a dependency on libcurl is enough.
qemu-0.15.0-4.fc16 has been submitted as an update for Fedora 16. https://admin.fedoraproject.org/updates/qemu-0.15.0-4.fc16
Package qemu-0.15.0-4.fc16: * should fix your issue, * was pushed to the Fedora 16 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing qemu-0.15.0-4.fc16' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/qemu-0.15.0-4.fc16 then log in and leave karma (feedback).
qemu-0.15.0-4.fc16 has been pushed to the Fedora 16 stable repository. If problems still persist, please make note of it in this bug report.