Hi, We are having loads of these errors in the logs in production after porting to JBoss4.0.4GA from JBoss3.2.3 :- anonymous wrote : 2007-07-17 21:40:56,580 61910688 WARN [org.jboss.ejb.plugins.AbstractInstanceCache] (Thread-37:) Unable to passivate due to ctx lock, id=192.168.128.105:1099:f48gb6cb-umb | 2007-07-17 21:40:56,580 61910688 WARN [org.jboss.ejb.plugins.AbstractInstanceCache] (Thread-37:) Unable to passivate due to ctx lock, id=192.168.128.105:1099:f48fdejr-ukx | 2007-07-17 21:40:56,580 61910688 WARN [org.jboss.ejb.plugins.AbstractInstanceCache] (Thread-37:) Unable to passivate due to ctx lock, id=192.168.128.105:1099:f48fdenp-ukz | Loads of them. These are coming mostly after the afterCompletion() of the SFSB is called. Is it related to the following JBAS-979:- http://jira.jboss.com/jira/browse/JBAS-979 But the above had been fixed in Jboss4.0.4GA and I am using the same. And once these start coming, the system becomes quite slow. Can anyone provide me any pointers or direct me to anything specific. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4065096#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...