You may receive a build error when compiling some packages in Fink of the form:
Can't resolve dependency "system-java-dev (>= 1.5-1)" for package...
This is due to the recent Apple Java update [crarko adds: discussed in this previous hint] and how the developer interfaces for Java are now distributed.
From the Fink homepage: 'Users will also need to download an appropriate version of the Java Developer Package from The Apple Developer Connection site for all of the the system-java-dev packages to show up on 10.5 and 10.6.'
[crarko adds: The link to ADC above does require a free membership in the Apple Developer Program to access the Java developer packages.]
Mac OS X Hints
http://hints.macworld.com/article.php?story=20101101040718543