Sorry, it does not work either. In Manager class there is an unlockConversation() method. After the nested conversation is destroyed, getCurrentConversationEntry() will return null, and its stack (which is obviously not empty) won't be unlocked. I suppose something like that: public void unlockConversation() | { | ConversationEntry ce = getCurrentConversationEntry(); | if (ce!=null) | { | ce.unlock(); | } | else | { | // current can be destroyed, but its stack can be not even unlocked | for ( String conversationId: currentConversationIdStack ) | { | if (conversationId.equals(currentConversationId)) continue; // destroyed | ConversationEntry cen = | ConversationEntries.instance().getConversationEntry(conversationId); | if (cen != null) | { | cen.unlock(); | break; | } | } | } | } It works :) After you did the whole stack to share one lock instance, the problem is nearly solved. Btw, thank you for Seam :) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3982979#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...