When I start up my install of JBoss AS 7.1.0 I notice the following line in my server.log.
[org.apache.catalina.core.AprLifecycleListener] (MSC service thread 1-7) The Apache Tomcat Native library which allows optimal performance in production environments was not found on [this would be a list of directories it is searching]
What specific library is it looking for? I have downloaded and installed the JBoss native 2.0.10 libraries and have added them to my library path. This path is showing up in the search path above.