The jacc is not running; it cannot be stopped.

[adrian.brock]

While this is a hilarious error message, it basically means the testsuite is broken at the moment.

See:
http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4146144#4146144

[anil.saldhana]

That message is from the JBoss Test framework. Last night, I did repackage one of the archives such that a previously undeployable test would deploy in the jacc test configuration. That is the only change I made.