Cannot reproduce. When I fire up Eclipse Juno SR1, and add the URL above, I get this:
https://community.jboss.org/servlet/JiveServlet/downloadImage/105-10942-19724/310-231/eclipsejunosr1-jbosstools4alpha2.png
What JDK are you using with Eclipse? Is it 64-bit or 32-bit? Needs to be the same as the version of Eclipse you're using. And must be JDK 6 or 7 - if you're using 5 or earlier, that could be the problem.
