title: Twitter API wrong rate-limit for users/lookup using oAuth
body: <p>i'm trying to get the users/lookup for about 400 users using oAuth. The result data is ok but when i check the rate limit it was based on ip rather than oAuth.
  I've checked the oAuth credentials with "http://api.twitter.com/1/account/verify_credentials.xml" and the result is ok. 
  Someone experience the same issue?</p>
  
  <p>P.S. getting home timeline tweets uses the correct rate limit.</p>
  
  <p>Thanks!
  Stefan</p>