We're trying to get 2-legged OAuth to work with the Gmail atom feed. We're using the Java library contributed by John Kristian, Praveen Alavilli and Dirk Balfanz. [http://oauth.net/code/] instead of the GData library. We know we have the correct CONSUMER_KEY and CONSUMER_SECRET, etc. becuase it works with the Contacts feed (http://www.google.com/m8/feeds/contacts/default/full) and have no problems. However with Gmail atom feed it always returns: HTTP/1.1 401 Unauthorized Any ideas? Should we try a different OAuth framework or does the problem lie on the Google side?