title: Maven Build Error Failure authenticating with NTLM
body: <p>When i am trying to build a maven package using <code>mvn package</code> command, it tries to download the dependencies. while downloading this dependenices i get the error NLTM authentication faliure. I have also updated the maven setting files for proxy setting.
  Error:</p>
  
  <pre><code>Downloading: http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-  resources-plugin/2.3/maven-resources-plugin-2.3.pom
  May 24, 2013 10:10:01 AM org.apache.commons.httpclient.auth.AuthChallengeProcessor   selectAuthScheme
  INFO: ntlm authentication scheme selected
  May 24, 2013 10:10:01 AM org.apache.commons.httpclient.HttpMethodDirector authenticate
  SEVERE: Credentials cannot be used for NTLM authentication: org.apache.commons.httpclient.UsernamePasswordCredentials    
  </code></pre>