# file -s /dev/zero /dev/zero: \0 on F16: $ file -s /dev/zero /dev/zero: data
file-5.11-2.fc17 has been submitted as an update for Fedora 17. https://admin.fedoraproject.org/updates/file-5.11-2.fc17
Package file-5.11-2.fc17: * should fix your issue, * was pushed to the Fedora 17 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing file-5.11-2.fc17' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2012-10724/file-5.11-2.fc17 then log in and leave karma (feedback).
file-5.11-2.fc17 has been pushed to the Fedora 17 stable repository. If problems still persist, please make note of it in this bug report.