Slow Global Address List update when adding new users

When I create a new AD user including an Exchange mailbox, I can instantly start adding them for directory security etc...however, I have found that it takes several days before they actually show up in the global address list.  (which makes it hard to give them calendar access etc).  Does anyone know:

1) Why it is so slow & how to fix that
2) If there is a way to manually update it

I have Windows 2003 server & Exchange 2003, fully patched.
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rustyrpageAsked:
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SembeeCommented:
The reason for the delay is that Outlook 2003 uses the offline address book.
The OAB is only updated once a day (which can be changed) and Outlook only downloads the updated address book once every 24 hours or when it is started (which cannot be changed, but you can download manually).

If you want to change the OAB generation time then this can be done in ESM. however I don't recommend any more than two or three times a day.

See my web site here: http://www.amset.info/exchange/oab-error.asp

Simon.
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rustyrpageAuthor Commented:
But we are talking more of 2-3 days wait time.
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SembeeCommented:
2 days isn't uncommon.

You make the change today at 10am.
The default update time is 6am if I recall correctly. So the OAB is updated the next morning.
The Outlook client is always running. It will update at the 24 hour period. If the client was started at 5pm three days ago, then the update will take place at 5pm. If the user has already gone home then they will see the updated file the next morning. Two days after you have made the change.

Simon.
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rustyrpageAuthor Commented:
Okay...that sounds good.
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