Exception when stopping container for a with Spring + Quartz + Tomcat web application

When stopping Tomcat, I am getting the following exception:

...appears to have started a thread named [org.springframework.scheduling.quartz.SchedulerFactoryBean#0_Worker-10] but has failed to stop it. This is very likely to crea开发者_Go百科te a memory leak.

How can I prevent it? I already have the destroy-method set to destroy on the SchedulerFactoryBean bean.

Just to say...

We have exactely the same error with Grails (wich is Spring -based) & Quartz on a tomcat server... The thread that can't be stopped are from Quartz pool We've never managed to correct that