Fedora 13, which began shipping in late May, boasts many of the leading-edge enhancements—and few of the rough spots—that I've come to expect from the popular Linux-based operating system. In particular, I appreciated the work the Fedora team has done in the area of security and permissions, with progress toward more granular rights management through Fedora's PolicyKit framework, and an implementation of the SELinux (Security-Enhanced Linux) framework that remained, for the most part, tucked away unobtrusively in the background.