'Breakpoint is invalid: Source code changed'

I've seen the historical messages on this. One would think that afer almost two years it would be fixed. This is a local stand-alone application -- no web server required.

I'm not using Ant and the debug option of javac is checked. The libraries I'm using do not have source but rather just the class files in the jar files, I'm not trying to debug into a jar any of these libraries. I haven't done anything yet regarding having my compiled classes put into a jar file. I have deleted and recompiled all of my projects class files.

Any option other than just going back to the System.out.println statements for debugging purposes?