After publish a few JMS TextMessages, I get the following exception in my stack trace :

23:35:09,093 ERROR [GravityJBossWebServlet] Gravity message error
java.io.EOFException
        at java.io.DataInputStream.readUnsignedByte(DataInputStream.java:273)
        at org.granite.messaging.amf.io.AMF3Deserializer.readAMF3Integer(AMF3Deserializer.java:140)
        at org.granite.messaging.amf.io.AMF3Deserializer.readObject(AMF3Deserializer.java:87)
        at org.granite.gravity.AbstractGravityServlet.deserialize(AbstractGravityServlet.java:111)
        at org.granite.gravity.jbossweb.GravityJBossWebServlet.handleRequest(GravityJBossWebServlet.java:65)
        at org.granite.gravity.jbossweb.AbstractHttpEventServlet.begin(AbstractHttpEventServlet.java:125)
        at org.granite.gravity.jbossweb.AbstractHttpEventServlet.event(AbstractHttpEventServlet.java:92)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilterEvent(ApplicationFilterChain.java:470)
        at org.apache.catalina.core.ApplicationFilterChain.doFilterEvent(ApplicationFilterChain.java:363)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
        at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190)
        at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92)
        at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
        at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
        at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
        at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:905)
        at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:592)
        at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:2036)
        at java.lang.Thread.run(Thread.java:619)
23:35:09,169 ERROR [[GravityServlet]] Servlet.service() for servlet GravityServlet threw exception
java.io.EOFException
        at java.io.DataInputStream.readUnsignedByte(DataInputStream.java:273)
        at org.granite.messaging.amf.io.AMF3Deserializer.readAMF3Integer(AMF3Deserializer.java:140)
        at org.granite.messaging.amf.io.AMF3Deserializer.readObject(AMF3Deserializer.java:87)
        at org.granite.gravity.AbstractGravityServlet.deserialize(AbstractGravityServlet.java:111)
        at org.granite.gravity.jbossweb.GravityJBossWebServlet.handleRequest(GravityJBossWebServlet.java:65)
        at org.granite.gravity.jbossweb.AbstractHttpEventServlet.begin(AbstractHttpEventServlet.java:125)
        at org.granite.gravity.jbossweb.AbstractHttpEventServlet.event(AbstractHttpEventServlet.java:92)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilterEvent(ApplicationFilterChain.java:470)
        at org.apache.catalina.core.ApplicationFilterChain.doFilterEvent(ApplicationFilterChain.java:363)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
        at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190)
        at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92)
        at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
        at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
        at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
        at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:905)
        at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:592)
        at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:2036)
        at java.lang.Thread.run(Thread.java:619)

All configuration seems fine as the Topic messages are published and consumed. Anyway the exception seems to be in the AMF code as per the stack trace. I do not understand why the request or what kind of request is made when this error happens.
This is a bit of a blocker as after the exception happens , the first action from my flex UI fails with a channel exception.