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I've got a user on Outlook 2007 connecting to Exchange 2003. When she opens an email with a return receipt, it takes about 30-60 seconds. I've found one reference to this problem via search, but no solutions.

The machine is a 2.6Ghz P4 w/ 512MB DDR266. One thing of note is that the user's mailbox size is very large (>3GB). Regular messages open fine.


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I have had this problem before, and im not sure you'll like the answer

I uninstalled office2k7, installed office2k3, connected (took 1/2 second), let the folders sync, upgraded to office 2k7 and finally had success.

Hope this saves others from similar frustration and wasted time.

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This machine was just upgraded from Office 2003... – boden Sep 29 '09 at 16:52
up vote 0 down vote accepted

The answer was to delete and recreate the user's Outlook profile. Everything's snappy now.

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