After 3 weeks with seam and my app getting bigger I realise the same problems. Injection of components randomly fails. I still got no pattern, when this happens. Fast clicking seams somehow to force it, as somebody alredy mentioned. The NPE occurs at exactly the same place as in this bug report. Maybe there is something common. http://jira.jboss.com/jira/browse/JBAS-4052 Oh and it happened with Seam 1.1.5 and it happens with Seam 1.2PATCH1. I skipped 1.1.6. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4024026#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...