The following message is not very helpful and looks like a message from the shell, telling that it couldn't execute the program: [user@dev-mk ~]$ sandbox -X -t sandbox_web_t firefox /usr/bin/sandbox: Permission denied Please change /usr/bin/sandbox so it shows the full exceptions without picking individual elements from error.args. For example use: except OSError, error: error_exit(error) so it shows the much more helpful: [user@dev-mk ~]$ sandbox -X -t sandbox_web_t firefox /usr/bin/sandbox: [Errno 13] Permission denied: '/home/user/.sandbox/.sandboxzLocV_'
Not sure how much more helpful but I will make the fix. Fixed in policycoreutils-2.0.83-33.11.fc14
policycoreutils-2.0.85-19.fc14 has been submitted as an update for Fedora 14. https://admin.fedoraproject.org/updates/policycoreutils-2.0.85-19.fc14
policycoreutils-2.0.85-19.fc14 has been pushed to the Fedora 14 stable repository. If problems still persist, please make note of it in this bug report.