http://java.sun.com/javase/6/docs/technotes/guides/preferences/overview.html

- Link of "Design FAQ" in Introduction
  <li><a href="#prefs-design-faq">Design FAQ</a></li>
    should be
  <li><a href="designfaq.html">Design FAQ</a></li>

- Link of "prior example" in Obtaining Preferences Objects for a Static Method
  <a href="#ex-enclosing">prior example</a>
    seems to be
  <a href="#prefs-usage-enclosing">prior example</a>
All links are fine in the 6 and 7 docs. This seems to have been fixed.