I have never had this problem before today, but when I go to an Area to manage security. I click New user, select the person and click ok. It appears to accept it. But at the Manage Security page where it displays the people the person I added does not appear in the list. But I checked with the person, and they are now able to perform updates to the area based on the security I just added.
I have spot checked my cache and deleted all offline files… any ideas?