Hi Steve,

There are may reasons for occurrence this Error "Outlook is Requesting Data From the Server" . Some of them describe here:
- Exchange server performance problems
- client (or add-in) problems
- network related issues
- large number of items in mailboxes
- Active Directory related issues (performance issues etc)
Troubleshoot this error through this link : http://blogs.technet.com/b/exchange/...25/405353.aspx