Been banging by head against the wall today, trying to figure out why the
webkit adapter wasn't talking to the Appserver. In the end it turned out it
was trying to connect to the wrong localhost!
It seems that the Appserver was listening on 127.0.0.1 and mod_webkit2 was
trying to connect to ::1. I just changed localhost in the Apache
configuration file to 127.0.0.1 and it magically sprang into life. Easy!