Thanks bela,
Stuck with another problem. Sorry to bug you so much! :P
I am using the latest jgroups build, jboss 4.0.2, hibernate 2.1, jdk 1.5

Getting this exception now:

  | 14:20:38,781 ERROR [com.tps.gen.ui.CalculatedProductHandler] - Unable to 
get the list. Returning an empty DataModel object
  | net.sf.hibernate.cache.CacheException: 
org.jboss.cache.lock.TimeoutException: rsp=sender=192.168.1.108:2159, 
retval=null, received=fal
  |         at net.sf.hibernate.cache.TreeCache.put(TreeCache.java:35)
  |         at 
net.sf.hibernate.cache.TransactionalCache.put(TransactionalCache.java:44)
  |         at 
net.sf.hibernate.impl.SessionImpl.initializeEntity(SessionImpl.java:2228)
  |         at 
net.sf.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:319)
  |         at net.sf.hibernate.loader.Loader.doQuery(Loader.java:309)
  |         at 
net.sf.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:138)
  |         at net.sf.hibernate.loader.Loader.doList(Loader.java:1063)
  |         at net.sf.hibernate.loader.Loader.list(Loader.java:1054)
  |         at 
net.sf.hibernate.loader.CriteriaLoader.list(CriteriaLoader.java:118)
  |         at net.sf.hibernate.impl.SessionImpl.find(SessionImpl.java:3660)
  |         at net.sf.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:238)
  |         at 
com.tps.framework.jsf.EntityHandler.getList(EntityHandler.java:373)
  |         at sun.reflect.GeneratedMethodAccessor440.invoke(Unknown Source)
  |         at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  |         at java.lang.reflect.Method.invoke(Method.java:585)
  |         at 
org.apache.myfaces.el.PropertyResolverImpl.getProperty(PropertyResolverImpl.java:386)
  |         at 
org.apache.myfaces.el.PropertyResolverImpl.getValue(PropertyResolverImpl.java:71)
  |         at 
org.apache.myfaces.el.ELParserHelper$MyPropertySuffix.evaluate(ELParserHelper.java:533)
  |         at 
org.apache.commons.el.ComplexValue.evaluate(ComplexValue.java:145)
  |         at 
org.apache.myfaces.el.ValueBindingImpl.getValue(ValueBindingImpl.java:362)
  |         at javax.faces.component.UIData.getValue(UIData.java:760)
  |         at javax.faces.component.UIData.createDataModel(UIData.java:525)
  |         at javax.faces.component.UIData.getDataModel(UIData.java:514)
  |         at javax.faces.component.UIData.getRowCount(UIData.java:103)
  |         at 
org.apache.myfaces.renderkit.html.HtmlTableRendererBase.encodeInnerHtml(HtmlTableRendererBase.java:122)
  |         at 
org.apache.myfaces.renderkit.html.HtmlTableRendererBase.encodeChildren(HtmlTableRendererBase.java:93)
  |         at 
javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:315)
  |         at 
org.apache.myfaces.renderkit.RendererUtils.renderChild(RendererUtils.java:444)
  |         at 
org.apache.myfaces.renderkit.RendererUtils.renderChildren(RendererUtils.java:427)
  |         at 
org.apache.myfaces.renderkit.html.HtmlGroupRendererBase.encodeEnd(HtmlGroupRendererBase.java:62)
  |         at 
javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:327)
  |         at 
javax.faces.webapp.UIComponentTag.encodeEnd(UIComponentTag.java:349)
  |         at 
javax.faces.webapp.UIComponentTag.doEndTag(UIComponentTag.java:253)
  |         at 
org.apache.myfaces.taglib.UIComponentBodyTagBase.doEndTag(UIComponentBodyTagBase.java:55)
  |         at 
org.apache.jsp.secure.calculatedProduct_jsp._jspx_meth_h_panelGroup_7(calculatedProduct_jsp.java:3043)
  |         at 
org.apache.jsp.secure.calculatedProduct_jsp._jspx_meth_h_form_0(calculatedProduct_jsp.java:2857)
  |         at 
org.apache.jsp.secure.calculatedProduct_jsp._jspService(calculatedProduct_jsp.java:352)
  |         at 
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
  |         at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  |         at 
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
  |         at 
org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
  |         at 
org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
  |         at 
org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
  |         at 
org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:415)
  |         at 
org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:228)
  |         at 
org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:299)
  |         at javax.faces.webapp.FacesServlet.service(FacesServlet.java:95)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  |         at 
com.tps.framework.servlet.HibernateFilter.doFilter(HibernateFilter.java:48)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  |         at 
com.tps.framework.servlet.HivemindFilter.doFilter(HivemindFilter.java:55)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  |         at 
org.apache.myfaces.component.html.util.ExtensionsFilter.doFilter(ExtensionsFilter.java:112)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  |         at 
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  |         at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
  |         at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
  |         at 
org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:39)
  |         at 
org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:153)
  |         at 
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:482)
  |         at 
org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:59)
  |         at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
  |         at 
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
  |         at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
  |         at 
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
  |         at 
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
  |         at 
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
  |         at 
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
  |         at 
org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
  |         at java.lang.Thread.run(Thread.java:595)
  | Caused by: org.jboss.cache.lock.TimeoutException: 
rsp=sender=192.168.1.108:2159, retval=null, received=false, suspected=false
  |         at org.jboss.cache.TreeCache.callRemoteMethods(TreeCache.java:2205)
  |         at org.jboss.cache.TreeCache.callRemoteMethods(TreeCache.java:2227)
  |         at 
org.jboss.cache.interceptors.ReplicationInterceptor.handleReplicatedMethod(ReplicationInterceptor.java:120)
  |         at 
org.jboss.cache.interceptors.ReplicationInterceptor.invoke(ReplicationInterceptor.java:85)
  |         at org.jboss.cache.TreeCache.invokeMethod(TreeCache.java:3116)
  |         at org.jboss.cache.TreeCache.put(TreeCache.java:1762)
  |         at net.sf.hibernate.cache.TreeCache.put(TreeCache.java:32)
  |         ... 77 more
  | 14:20:38,781 INFO  [com.tps.framework.service.impl.PersistenceImpl] - 
Closing Session & Transaction for Thread [http-0.0.0.0-8080-1].
  | 
  | 

my treecache.xml looks like this:

  | <?xml version="1.0" encoding="UTF-8"?>
  | 
  | <server>
  |     
  |     <classpath codebase="./lib" archives="jboss-cache.jar, jgroups.jar" />
  |     <mbean code="org.jboss.cache.TreeCache" 
name="jboss.cache:service=TreeCache">
  | 
  |     <depends>jboss:service=Naming</depends>
  |     <depends>jboss:service=TransactionManager</depends>
  | 
  |     <attribute name="ClusterName">MyCluster</attribute>
  |     <attribute name="CacheMode">REPL_SYNC</attribute>
  |     <attribute name="SyncReplTimeout">10000</attribute>
  |     <attribute name="LockAcquisitionTimeout">15000</attribute>
  |     
  |     <attribute name="FetchStateOnStartup">true</attribute>
  |     <attribute 
name="EvictionPolicyClass">org.jboss.cache.eviction.LRUPolicy</attribute>
  |     <attribute name="EvictionPolicyConfig">
  |             <config>
  |                     <attribute name="wakeUpIntervalSeconds">5</attribute>
  |                     <!-- Cache wide default -->
  |                     <region name="/_default_">
  |                             <attribute name="maxNodes">5000</attribute>
  |                             <attribute 
name="timeToIdleSeconds">1000</attribute>
  |                     </region>
  |             </config>
  |     </attribute>
  |     <attribute name="ClusterConfig">
  |             <config>
  |                     <UDP bind_addr="192.168.1.109"
  |                             mcast_addr="228.8.8.8"
  |                             mcast_port="45566" 
  |                             ip_ttl="64" 
  |                             ip_mcast="true"
  |                             mcast_send_buf_size="150000" 
  |                             mcast_recv_buf_size="80000"  
  |                             ucast_send_buf_size="150000"
  |                             ucast_recv_buf_size="80000"
  |                             loopback="true" 
  |                             max_bundle_size="60000"
  |                             max_bundle_timeout="30"
  |                             use_incoming_packet_handler="false"
  |                             use_outgoing_packet_handler="false" 
  |                             enable_bundling="false"
  |                             />
  | 
  |                     <PING timeout="6000" num_initial_members="2" 
up_thread="false" down_thread="false" />
  |                     <FD_SOCK />
  |                     <pbcast.NAKACK gc_lag="50"
  |                                     retransmit_timeout="600,1200,2400,4800"
  |                             max_xmit_size="8192"
  |                             up_thread="false" down_thread="false" />
  |                     <UNICAST timeout="600,1200,2400" window_size="100"
  |                             min_threshold="10" down_thread="false" />
  |                     <pbcast.STABLE desired_avg_gossip="20000" 
up_thread="false"
  |                             down_thread="false" />
  |                     <FRAG frag_size="8192" down_thread="false" 
up_thread="false" />
  |                     
  |                     <pbcast.GMS join_timeout="5000" 
  |                             join_retry_timeout="2000"
  |                             shun="true" print_local_addr="true" />
  |                     
  |                     <pbcast.STATE_TRANSFER up_thread="true" 
down_thread="true" />   
  |             </config>
  |     </attribute>
  |     </mbean>
  | </server>
  | 

Its in a 2 node configuration. It works for some objects some time and other 
times it doesnt work. I am thinking it must be some configuration issue that i 
have to get around.. 

Thanks
Rahul

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