I have been running version 2.0-m4 of the plugin for about a month.
This morning I upgraded to Version: 2.0.0.v200706110821 (RC1)
Now, every one of my ref bean statements generates a warning:
Referenced bean 'beanName' not found
eclipse 3.3.0 M6
spring 1.2.4 (unfortunately, from an old project)
If I turn off the Beans Validator for the project, the warnings go away (of course).