NetInfo Manager on Mac OS X 10.3.x through 10.3.5, after an initial root login, reports the root account as being disabled, even when it has not.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2004-0922
http://www.securityfocus.com/bid/11322
http://lists.apple.com/archives/security-announce/2004/Oct/msg00000.html