When building OODT for the first time after a fresh check-out of the trunk, the maven-javadoc-plugin (v2.7) gets stuck and throws many exceptions like this:
After the Javadocs have all been built individually, everything's fine, but the first time around it gets stuck if invoked from the top-level directory. It's a known problem with the maven-javadoc-plugin (I think covered by several Codehaus JIRA issues, e.g. MJAVADOC-275 and MJAVADOC-276). It seems to have been fixed from v2.8 onwards, so perhaps we could use the latest version (v2.9).