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Last Answered:
Jun 19 2008 8:10 PM GMT
by Petecee
Could be you/your users are looking at offline address book, by default, it is only regenerated once every 24 hours. It is possible your RUS is not running, though, or is misconfigured. If you shut down a domain controller or Exchange server that the RUS was using. Here is a good article about the RUS and somethings to check.
http://www.msexchange.org/tutorials/MF017.html