Axis2 - Authentication state already initialized

Hi,

I'm trying to call a webservice, out of my network, using proxy. The service is reacheable from browser but not using the client.
My proxy settings are written in this way:

HttpTransportProperties.ProxyProperties proxyProperties = new HttpTransportProperties.ProxyProperties();
proxyProperties.setProxyName(proxyname);
proxyProperties.setProxyPort(proxyport);
proxyProperties.setDomain(domain);
proxyProperties.setPassWord(password);
proxyProperties.setUserName(username);
service._getServiceClient().getOptions().setProperty(org.apache.axis2.transport.http.HTTPConstants.PROXY, proxyProperties);

With this settings the program raises this error:

Exception in thread "main" java.lang.IllegalStateException: Authentication state already initialized
at org.apache.commons.httpclient.auth.AuthState.setPreemptive(AuthState.java:120)
at org.apache.commons.httpclient.HttpMethodDirector.executeConnect(HttpMethodDirector.java:487)
at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:391)
at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:171)
at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:397)
at org.apache.axis2.transport.http.impl.httpclient3.HTTPSenderImpl.executeMethod(HTTPSenderImpl.java:872)
at org.apache.axis2.transport.http.impl.httpclient3.HTTPSenderImpl.sendViaPost(HTTPSenderImpl.java:212)
at org.apache.axis2.transport.http.HTTPSender.send(HTTPSender.java:121)
at org.apache.axis2.transport.http.CommonsHTTPTransportSender.writeMessageWithCommons(CommonsHTTPTransportSender.java:403)
at org.apache.axis2.transport.http.CommonsHTTPTransportSender.invoke(CommonsHTTPTransportSender.java:234)
at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:431)
at org.apache.axis2.description.OutInAxisOperationClient.send(OutInAxisOperation.java:399)
at org.apache.axis2.description.OutInAxisOperationClient.executeImpl(OutInAxisOperation.java:225)
at org.apache.axis2.client.OperationClient.execute(OperationClient.java:150)
at com.microsoft.schemas.crm._2006.webservices.CustomerIntegrationServiceStub.findCustomer(CustomerIntegrationServiceStub.java:741)
at com.cdb.Service.main(Service.java:48)

If I not use this settings I receive a timeout connection, if I not pass the credentials I receive an error about authentication required.

I searched on the web and on your issues and the problem seemed solved with the http-client version 4, but I used always this version so I would need an help.

Thanks