I just posted this to another topic regarding the same thing...
I'm guessing this is because for the EJB 3.0 install, GA uses Quartz for scheduling.
That's just a guess since I never used the JBoss scheduler, only Quartz.
View the original post :
http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3959577#...
Reply to the post :
http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...