I just finished installing a fresh copy of Fedora Core 4, and when I booted it up for the first time, it got here:

Enabling swap space: [ OK ]

audit (:321182): major=252 name_count=0: freeing multiple contexts (1)
audit (:142107): major=113 name_count=0: freeing multiple contexts (2)
audit (:322409): major=252 name_count=0: freeing multiple contexts (1)
audit (:323379): major=113 name_count=0: freeing multiple contexts (2)
audit (:323668): major=252 name_count=0: freeing multiple contexts (1)
audit (:323638): major=113 name_count=0: freeing multiple contexts (2)


After that, nothing. It was frozen. After a hard reboot, I got to the initial post-install setup screen and I haven't had the problem since. It's not really a problem so much as it is intriguing. Anyone know what this means?

Try a cat /proc/devices to see if you can identify which ones have major numbers 252 and 113. That might give you a clue.

But I suspect that what happened is that udev tried to configure a couple of devices for you, and failed because you didn't have those devices. When it failed, the /etc/udev.conf was modified so the device(s) would not, thereafter, be accessed. Hence only the initial boot failed, and you've hade no further problems.