Hi. I think in section "19.1.7. Using lazy property fetching", instead of <taskdef name="instrument" classname="org.hibernate.tool.instrument.InstrumentTask"> it should say classname="org.hibernate.tool.instrument.BasicInstrumentTask"> or classname="org.hibernate.tool.instrument.cglib.InstrumentTask"> Should i open a JIRA issue? Regards. -- -=-=-=-=-=-=-=-=-=-=-=-=- Andrés González. http://coyotevil.blogspot.com