I can't recall if I have seen this on BugTraq so forgive me if this is an old issue.
Try these steps on an OS X machine (not logged in as root)
- Open up the terminal application
- Quit the terminal application
- Open up NetInfo Manager (leave it in the foreground) - Open up the Terminal application form the "Recent Items" list
in the Apple Menu.
You should now be logged in as root!
This was passed on to me from the "Macsec mailing list"