[twitter-dev] Reg: unauthorirzed error while getting profile url

Hi,

Currently i am using oAuth to get the public profile of the twitter

Details are:
_oauth.oAuthWebRequest(oAuthTwitter.Method.GET, "https://
api.twitter.com/account/verify_credentials.xml",string.Empty);

this is the webrequest i am using to get the profile but this is
working in an intermitten way.

Its throwing error like :

<?xml version="1.0" encoding="UTF-8"?>
<hash>
<request>/account/verify_credentials.xml?
oauth_consumer_key=oX9ZTIjxulA1dTpWPk7HA&amp;oauth_nonce=8868298&amp;oauth_signature_method=HMAC-
SHA1&amp;oauth_timestamp=1301663655&amp;oauth_token=PYg58LLcIlDFCFFHy0AAi9Z30k0dUKDSFrDAiTjnXkQ&amp;oauth_verifier=JzN6a5BIE0XCpCh7ER2YjVWkZIxVK4dAYwqYujRnOA&amp;oauth_version=1.0&amp;oauth_signature=njf2uxyVlBpclvvP4BOzOEF3orU
%3d</request>
<error>Could not authenticate you.</error>
</hash>

Can anyone help me in resolving this issue.

And is there any expiry of the access token that was obtained?

Thanks,
Yashwanth Konathala.

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