Cannot expand folder after starting Exchange 2007 upgrade

I have just started our Exchange 03-07 upgrade and am experieincing an issue.  Currently all we have is one exch07 server running with public fodler replica's setup and 3 Exchange 03 servers.  I have moved one test user over to it to verify that mail flow and OWA work.  In our Company there are 2 users that have admin rights over all the mail boxes.  Myself being one of them.  After the install of Exchange 07 both of us can not open another users mail box.  I have verified my permissions and I am listed as a Org admin in Exchange 07 but every time I try to open another users folder I get the error that I can not expand the folder.  I am adding them to my outlook via account settings.

Any ideas?
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hamel01Asked:
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getzjdConnect With a Mentor Commented:
I had an issue when doing our 2003 to 2010 migration that the exchange accounts at Site B were still pointed to Site A Exchange 2010 after installing Exchange 2010 at Site B and moving mailboxes.  This kept users from opening other mailboxes and calendars.

Your permission problem is a common one, check here  http://support.microsoft.com/kb/821897
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getzjdCommented:
Check out outlook account settings and make sure your account is pointing to the new server where your mailbox is hosted.
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hamel01Author Commented:
My mailbox is not on the new server.  Just the test mailbox.  The boxes that i am trying to open are all on the older 03 servers. One thing that i have noticed is that the Exchange Org. Admin is denied full mailbox access in the security properties when you view them in Exchange 03.  I am assuming this is the problem but am not sure what the correct way is to fix it.
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