I am using Outlook XP as a client on a recently upgraded Exchange 2003 server. I stay active on the network all day. Email does not pop up automatically (even though Tools/Options/Mail Setup/Send-Receive for online Outlook is scheduled for send/receive every 1 minute) -- instead, I have to "activate" Outlook by either re-starting it or by otherwise engaging it (e.g. opening another email message) for new emails to show up. New emails will occasionally pop in, but sometimes up to 20 minutes after they were sent (even when these messages were sent by another user on the same Exchange server). By the way, some users of Outlook 2003 report the same problem on my network. Any ideas why we're experiencing this delay? Any cures for it?