I am having the same problem on my home PC. The strange thing is, it works fine on my computer at work, and they are similarly configured. My JAVA_HOME and ANT_HOME are set correctly.
Why can't Ant find the javadoc executable for the <javadoc> task, the same way it finds the javac executable for the <javac> task?
I just updated my Eclipse to the very latest updates (2009-03-26). I googled this today and found no help either.
Thanks
Geoffrey