Oh, well, the mystery is solved regarding why I only have to do the IPv4 trick in Eclipse. In run.sh there is: # Force IPv4 on Linux systems since IPv6 doesn't work correctly with jdk5 and lower | if [ "$linux" = "true" ]; then | JAVA_OPTS="$JAVA_OPTS -Djava.net.preferIPv4Stack=true" | fi Likely the answer to my other issues lies in this script then as well. Hmmm... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4063099#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...