Upgraded to Outlook 2007 from Outlook 2003. After upgrade problems began. Outlook will be connected and lose its connection and a message will appear in the bottom right hand corner stating "Trying to connect to Microsoft exchange". It will sit there and eventually disconnect you from the server. The only way to correct the problem and reconnect to the server is to close the program and disconnect the internet modem and reboot the modem. Any suggestions on what maybe causing the problem?