I've just updated File in Rawhide. Before pushing it to stable Fedora, I want to be sure how to fix python-magic backward compatibility. See http://mx.gw.com/pipermail/file/2011/000693.html for more details.

Sounds good to me.

file-5.07-1.fc15 has been submitted as an update for Fedora 15.
https://admin.fedoraproject.org/updates/file-5.07-1.fc15

Package file-5.07-1.fc15:
* should fix your issue,
* was pushed to the Fedora 15 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing file-5.07-1.fc15'
as soon as you are able to.
Please go to the following url:
https://admin.fedoraproject.org/updates/file-5.07-1.fc15
then log in and leave karma (feedback).

file-5.07-2.fc15 has been submitted as an update for Fedora 15.
https://admin.fedoraproject.org/updates/file-5.07-2.fc15

file-5.07-2.fc15 has been pushed to the Fedora 15 stable repository.  If problems still persist, please make note of it in this bug report.