I just installed JBossAS 7.1.Beta1. However, the server start is hanging in an endless loop (see below). Maybe it's due to the new security mechanism in standalone/configuration/mgmt-users.properties.
13:55:42,836 INFO [org.jboss.as] (Controller Boot Thread) JBoss AS 7.1.0.Beta1 "Tesla" started in 2862ms - Started 143 of 206 services (60 services are passive or on-demand)
13:55:45,116 ERROR [org.jboss.remoting.remote] (Remoting "iwi-w-ziju01-c:MANAGEMENT" read-1) JBREM000200: Remote connection failed: java.io.IOException: JBREM000201: Received invalid message on Remoting connection 001bd732 to /127.0.0.1:53864
// from now on: endless loop of the preceeding line