Debugger: Can't step into source code or access javadoc

For sources and javadocs other than the JDK (jdom, spring etc),
I want to be able to:

 ->step into, for example, the Spring source,
 -> navigate to the source method by Right click->Navigate-> Goto Source,
 -> navigate to javadoc by Right click->Navigate-> Goto JavaDoc.

This works fine for the JDK, nothing else.

No matter how I add the source or api docs via the Java Platform manager,
all I get is a "dunk" noise and a little "missing($source)" error msg.

I know this worked back in NB 5.5.
Anybody figure out how to revive it in 6.1?