I have communication ( may be JNDI ?) problems even by testing the simplest EJB program
My Ejb Bean:

@Stateless(name = "Test1")
public class Test1 implements Test1Remote {

 /**
 * Default constructor.
 */
 public Test1() {
 // TODO Auto-generated constructor stub
 }

 public String echo (String str){
 System.out.println("Test1:echo str ="+str);
 return str;
 }

My Remote:

@Remote
public interface Test1Remote {

 public String echo (String str);

}

My Client:

public class Main {
 public static void main(String[] args) {
 try {
 InitialContext ctx = CmsEjbUtil.getInitialCotext();
 Test1Remote dao = (Test1Remote) ctx.lookup("Test1/remote");
 String str =dao.echo("Hello World");
 System.out.println(str);
 } catch (NamingException e) {

 e.printStackTrace();
 }

 }

CmsEjbUtil.getInitialCotext() :

 public static InitialContext getInitialCotext() throws NamingException {
 Hashtable props = new Hashtable<String, String>();
 props.put("java.naming.factory.initial", "org.jnp.interfaces.NamingContextFactory");
 props.put("java.naming.factory.url.pkgs", "org.jboss.naming:org.jnp.interfaces");
 props.put("java.naming.provider.url", "jnp://localhost:1099");
 return new InitialContext(props);
 }

but when I run client I get the following stack trace:

javax.naming.CommunicationException: Could not obtain connection to any of these urls: localhost:1099 and discovery failed with error: javax.naming.CommunicationException: Receive timed out [Root exception is java.net.SocketTimeoutException: Receive timed out] [Root exception is javax.naming.CommunicationException: Failed to connect to server localhost/0:0:0:0:0:0:0:1:1099 [Root exception is javax.naming.ServiceUnavailableException: Failed to connect to server localhost/0:0:0:0:0:0:0:1:1099 [Root exception is java.net.ConnectException: Connection refused: connect]]]
 at org.jnp.interfaces.NamingContext.checkRef(NamingContext.java:1725)
 at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:689)
 at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:682)
 at javax.naming.InitialContext.lookup(Unknown Source)
 at Main.main(Main.java:14)
Caused by: javax.naming.CommunicationException: Failed to connect to server localhost/0:0:0:0:0:0:0:1:1099 [Root exception is javax.naming.ServiceUnavailableException: Failed to connect to server localhost/0:0:0:0:0:0:0:1:1099 [Root exception is java.net.ConnectException: Connection refused: connect]]
 at org.jnp.interfaces.NamingContext.getServer(NamingContext.java:331)
 at org.jnp.interfaces.NamingContext.checkRef(NamingContext.java:1696)
 ... 4 more
Caused by: javax.naming.ServiceUnavailableException: Failed to connect to server localhost/0:0:0:0:0:0:0:1:1099 [Root exception is java.net.ConnectException: Connection refused: connect]
 at org.jnp.interfaces.NamingContext.getServer(NamingContext.java:301)
 ... 5 more
Caused by: java.net.ConnectException: Connection refused: connect
 at java.net.PlainSocketImpl.socketConnect(Native Method)
 at java.net.PlainSocketImpl.doConnect(Unknown Source)
 at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
 at java.net.PlainSocketImpl.connect(Unknown Source)
 at java.net.SocksSocketImpl.connect(Unknown Source)
 at java.net.Socket.connect(Unknown Source)
 at org.jnp.interfaces.TimedSocketFactory.createSocket(TimedSocketFactory.java:97)
 at org.jnp.interfaces.TimedSocketFactory.createSocket(TimedSocketFactory.java:82)
 at org.jnp.interfaces.NamingContext.getServer(NamingContext.java:297)
 ... 5 more

When my server don't get any request from client.

While boot of jboss 5.0.1 I got some errors that first error that I've got is:

12:22:42,206 DEBUG [ProfileServiceBootstrap] Failed to build ManagedDeployment for: AbstractKernelDeployment@18ddc48{name=file:/C:/AS/jboss-5.0.1.GA/server/default/conf/bootstrap/vfs.xml installed=true beanFactories=[AbstractBeanMetaData@12bbe6b{name=VFSCache bean=null properties=[realCache, permanentRoots] constructor=AbstractConstructorMetaData@1347124{parameters=[null] factoryClass=org.jboss.virtual.spi.cache.VFSCacheFactory factoryMethod=getInstance} autowireCandidate=true start=AbstractLifecycleMetaData@1f02b85{ whenRequired=ControllerState@e28a61{Start} parameters= }}, AbstractBeanMetaData@146ee9c{name=VfsNamesExceptionHandler bean=org.jboss.virtual.plugins.context.helpers.NamesExceptionHandler properties= constructor=AbstractConstructorMetaData@1db52c8{parameters=[java.lang.String]} autowireCandidate=true}]}
org.jboss.deployers.spi.DeploymentException: Error deploying: file:/C:/AS/jboss-5.0.1.GA/server/default/conf/bootstrap/vfs.xml
 at org.jboss.deployers.spi.DeploymentException.rethrowAsDeploymentException(DeploymentException.java:49)
 at org.jboss.deployers.vfs.deployer.kernel.BeanMetaDataFactoryVisitor.deploy(BeanMetaDataFactoryVisitor.java:136)
 at org.jboss.system.server.profileservice.ProfileServiceBootstrap.initBootstrapMDs(ProfileServiceBootstrap.java:453)
 at org.jboss.system.server.profileservice.ProfileServiceBootstrap.start(ProfileServiceBootstrap.java:199)
 at org.jboss.bootstrap.AbstractServerImpl.start(AbstractServerImpl.java:405)
 at org.jboss.Main.boot(Main.java:209)
 at org.jboss.Main$1.run(Main.java:547)
 at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.IllegalStateException: ClassLoader has not been set
 at org.jboss.deployers.structure.spi.helpers.AbstractDeploymentUnit.getClassLoader(AbstractDeploymentUnit.java:152)
 at org.jboss.deployers.vfs.deployer.kernel.BeanMetaDataFactoryVisitor.addBeanComponent(BeanMetaDataFactoryVisitor.java:60)
 at org.jboss.deployers.vfs.deployer.kernel.BeanMetaDataFactoryVisitor.deploy(BeanMetaDataFactoryVisitor.java:126)
 ... 6 more

Could it be the prooblems stems from my OS Vista? Please help.