If you are using JBoss as your application server, you must replace the jboss-eap-5.1/jboss-as/common/lib/cglib.jar file with an unsigned version of the file, which can be downloaded from here:
http://search.maven.org/remotecontent?filepath=cglib/cglib/2.2.2/cglib-2.2.2.jar
In addition, to avoid a JBoss issue that can result in 100% CPU usage, you must replace the jboss-eap-5.1/jboss-as/common/lib/jbossjts.jar file with an updated version, which can be downloaded from here:
