I can see it restarting JBoss (successfully) just prior to that 70%point. It's when it thinks JBoss is up and running that it then tests for a response from it - I've since realised that
http://localhost:8080 is actually supposed to be the default page of the JBoss server website. In fact, I briefly saw this page come up in my browser when I tried manually navigating to it.
However, I've only seen it that one time - all other attempts to view it just seem to hang.
Anyway, that's straying off the point a little - back to the config manager issue...at the 70% point it's hanging, if I look in services.msc I can see the JBoss service running ok. If I try to manually stop it from there, it doesn't stop successfully.
services.msc also reports "Local System" for the account the JBoss service is running under, so I don't see what I can change there.
I'm baffled.
I wish this install/config stuff just worked out-of-the-box. I just want to be able to evalute the actual functionality, without having to spend hours getting there.