Just in the rare case that someone at JBoss cares. Upgrading to 4.2.0 has been a thoroughly unpleasant experience. 1. JSF 1.2 does not work with MyFaces Tomahawk 1.1.4 or 1.1.5 http://www.jboss.com/index.html?module=bb&op=viewtopic&t=108746 All JBoss says about this is that Tomahawk 'should work'. 2. (Apparently) JBossTS does not support multiple local-tx and switching to xa-tx does not work so easily http://www.jboss.com/index.html?module=bb&op=viewtopic&t=109361 No comments in release notes about this. 3. JBossWeb Native does not work very well with a reverse-proxy. We get random 3 second delays before a proxy request gets acted upon. To date I have found no information on this. 4. AJP classes have been removed from the distribution (e.g. org.apache.jk.config.ApacheConfig) No comment in release notes about this. 5. Even though 4.2.0 was released a month ago http://www.jboss.com/index.html?module=bb&op=viewtopic&t=108479 all documentation is still 4.0.5 http://labs.jboss.com/jbossas/docs which, when so many changes have been made, is not very 'Professional Open Source' 6. Searching, or even posting to, the bulletin board is usually pointless. Maybe I have been spoilt by previous upgrades being so easy, or maybe JBoss considers rewriting working applications (points 1 and 2) to be 'normal procedure' in an upgrade, or maybe JBoss is losing it... Dave View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4051631#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...