if (auth_stub instanceof LoginProxyInterface) {
statusMsg.setText("Login...");
progresB.setValue(55);
MarshalledObject dataMO =
((LoginProxyInterface) auth_stub).login(
new Account(username, password)); //mi ritorna un MS
statusMsg.setText("Login successful...");
progresB.setValue(70);
Object msObj = dataMO.get();
progresB.setValue(75);