Hmm, no idea. Never seen that before.
Have you defined the JBoss Nexus repositories so it can find the dependecies?
Maybe try to delete jboss from your local Maven repo, might be some faulty download..
Thanks for the answer Aslak.
I have the nexus repository configured, just as it comes with the default pom.xml the weld archetype provides.
I tried deleting the jboss folder from my local repository and nothing changed. Weird do, 'cos I was expecing that to come down again when I refreshed the project...