I have Exchange 2003 on SBS2003. One of our users (Assistant) updates calendar of other user (Director), or the Director updates his calendar himself. The problem is that delays before Assistant can see Director entries and vice versa is very long (they claim that even 1 day but it’s hard to believe…). Is there a way to force sync to be instant? One user users Office 2007 and the other one Office 2003 but soon to be changed to Office 2010. They also use external devices (smartphones).