When doing a livecd creation (and earlier, I think I hit this doing a yum update), when the policy was loaded, the X server went unhappy and several apps crashed with a BadValue error. This seems bad.
Are you sure you are up2date. There was some similar problems on an x release a week or so ago.
The crash I had earlier wasn't fully updated, I had last updated it about a week ago. But the livecd creation was after just updating my workstation to current rawhide, rebooting and making sure I could still build live images. So it was definitely current. Also, we need to be very very very sure that reloading policy/updating doesn't kill the X server as doing so is a good way to lead to significant problems on people's systems.
*** Bug 436819 has been marked as a duplicate of this bug. ***
Sorted in 1.4.99.901-8. X-SELinux will be off by default in F9.