This is a nice bruise that took me some time to solve. After installing a new jdk and switching Fuse IDE 6.0 to the new installed JRE under Preferences / Java / Installed JRE's
, one has to remember that there is a setting under Fuse Plugins for Eclipse / JMX Explorer / Tools
that has to be set aswell so the processes to be monitored are running on the same VM as the IDE.
Otherwise no JMX servers get enlisted.