1. After hitting @ in a javadoc-comment I get a list of javadoc-tags and XDoclet tags. Now I select ejb put no proposals are shown. In the documentation it's mentioned that this may be the result of conflicting xtags.xml definitions, but I do not know how to resolve this.
The proposals depend on the context. To get ejb proposals you have to be in a class that implement some EJB bean interface.
The xtags.xml for the ejb module is not the reason for this.
Check out "Missing figure in 3.x doc".