Error in pdk url services when using a proxy server

Hi All,
i created a pdk url services portlet, which connects to a google site. i got a sucessful provider test page..when i tried to add it as a portlet it gives me the following error ,
Portlet Information could not be obtained. (WWC-44334)
An unexpected error occurred: ORA-29532: Java call terminated by uncaught Java exception: HTTPClient.AuthSchemeNotImplException: NTLM (WWC-43000)
An unexpected error occurred: HTTPClient.AuthSchemeNotImplException: NTLM
at HTTPClient.DefaultAuthHandler.getAuthorization(DefaultAuthHandler.java:136)
at HTTPClient.AuthorizationInfo.queryAuthHandler(AuthorizationInfo.java:330)
at HTTPClient.AuthorizationModule.setAuthHeaders(AuthorizationModule.java:454)
at HTTPClient.AuthorizationModule.responsePhase2Handler(AuthorizationModule.java:287)
at HTTPClient.HTTPResponse.handleResponse(HTTPResponse.java:635)
at HTTPClient.HTTPResponse.getInputStream(HTTPResponse.java:515)
at oracle.webdb.provider.web.HttpProviderDispatcher.dispatch(HttpProviderDispatcher.java:809)
what could be the reason for this error. can anyone help me plzz..its urgent
Regds
Kiran
at oracle.webdb.provider.web.HttpProviderDispatcher.getPortlet(HttpProviderDispatcher.java:463)
(WWC-43000)

1. The version of my pdk is 3.0.9.0.5
2. provider.xml
<?xml version = '1.0' encoding = 'UTF-8'?>
<?providerDefinition version="2.0"?>
<provider class="oracle.portal.provider.v1.http.URLProvider">
<session>true</session>
<proxyInfo class="oracle.portal.provider.v1.http.ProxyInformation">
<httpProxyHost>proxy</httpProxyHost>
<httpProxyPort>80</httpProxyPort>
<proxyUser>username</proxyUser>
<proxyPassword>password</proxyPassword>
</proxyInfo>
<portlet class="oracle.portal.provider.v1.http.URLPortlet">
<id>1</id>
<name>Google.com Portlet</name>
<title>Google.com Portlet</title>
<description>This portlet is to test PDK-URL Services using Google</description>
<timeout>100</timeout>
<timeoutMessage>Google Portlet timed out</timeoutMessage>
<showEdit>false</showEdit>
<showEditDefault>false</showEditDefault>
<showPreview>false</showPreview>
<showDetails>false</showDetails>
<hasHelp>false</hasHelp>
<hasAbout>false</hasAbout>
<acceptContentType>text/html</acceptContentType>
<registrationPortlet>false</registrationPortlet>
<accessControl>public</accessControl>
<renderer class="oracle.portal.provider.v1.RenderManager">
<showPage class="oracle.portal.provider.v1.http.URLRenderer">
<contentType>text/html</contentType>
<pageExpires>60</pageExpires>
<pageUrl>http://www.google.com</pageUrl>
<filter class="oracle.portal.provider.v1.http.HtmlFilter">
<headerTrimTag><center</headerTrimTag>
<footerTrimTag>/center></footerTrimTag>
<convertTarget>true</convertTarget>
</filter>
</showPage>
</renderer>
<securityManager class="oracle.portal.provider.v1.http.URLSecurityManager">
<authorizType>public</authorizType>
</securityManager>
</portlet>
</provider>
Regds
Kiran

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