We have successfully linked over 200,000 of our user accounts with their myspace accounts. In about 1% of these, subsequent requests to http://api.myspace.com/v2/people/@me/@self using the resulting access_token/secret result in the response "oauth_problem=token_rejected".
Are there conditions under which the tokens will become invalid? If they do, will they ever become valid again, or do we need to take the user through the process to get a new access_token/secret?