HELP!!! End users can use two seperate passwords (old one & new one) to authenticate into OWA 2010

Hi, I was verifying that end users could change their domain account passwords using the Change Password option within Outlook Web App (OWA), (Exchange 2010), which worked, but for some reason the end users can still use their old password to log into the OWA, as well, as use their new password.  So, either or.

However, if they attempt to log into a domain PC with the old password it doesn't allow it.

Can anyone explain or tell me what might be happening for this to occur?  Or do I just need to wait a little longer for this to finalize their password change with OWA?

Thanks in advance.
rsnellmanIT ManagerAsked:
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It can take up to 30 minutes for the old password to stop working. Exchange 2010 caches AD information and eventually it will expire.

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Replication could be an issue. Force replication and see how that works out...
rsnellmanIT ManagerAuthor Commented:
Julian123, Yes that is what it was.  Just need to be patient.

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