Cannot turn off HDScanner in AS6

Disabling the HDscanner by following the doc http://community.jboss.org/wiki/turndeploymentscannerDown does not work.

It appears that the profile service starts the HDScanner at boot - removing the entry <property name="hdScannerFactory"><inject bean="HDScannerFactory" /></property> from conf/bootstrap/profile.xml causes an NPE in BasicProfileServiceBootstrap.java:

2011-02-03 17:58:46,069 ERROR [ProfileServiceBootstrap] (Thread-2) failed to start server: java.lang.NullPointerException
at org.jboss.system.server.profileservice.bootstrap.BasicProfileServiceBootstrap.start(BasicProfileServiceBootstrap.java:141) [:6.0.0.Final]
at org.jboss.system.server.profileservice.bootstrap.BasicProfileServiceBootstrap.start(BasicProfileServiceBootstrap.java:56) [:6.0.0.Final]
at org.jboss.bootstrap.impl.base.server.AbstractServer.startBootstraps(AbstractServer.java:827) [jboss-bootstrap-impl-base.jar:2.1.0-alpha-5]
at org.jboss.bootstrap.impl.base.server.AbstractServer$StartServerTask.run(AbstractServer.java:417) [jboss-bootstrap-impl-base.jar:2.1.0-alpha-5]
at java.lang.Thread.run(Thread.java:662) [:1.6.0_23]