Are you behind some (office) proxy? I haven't had issues downloading from jboss.org. Have you tried from a different network?
This is happening in my office network as well as in my home.. both the places this issue was there. Also I used different machines to download.
Can some one provide me alternate link to download the JBoss AS?
I am able to dwnload JBoss AS from the following link: http://www.jboss.org/jbossas/downloads (7.1.0.CR1b The Flux Capacitor)
So it looks like the link is correct. Please check your n/w again.