Recently migrated from Exch2003 to 2007 and followed Microsoft's instructions and everything seemed to go well. I have removed the 2003 server and now when opening a Outlook 2007 for the first time it tries to connect to the old server. I have also noticed that the new server doesn't appear in Active Directory sites list. I would think it should. Also the Exchange Management Console takes a long time to load and eventually asks me to end the snap in.