I am having trouble backing up Exchange 2007 on Server 2008 Standard SP2, 64 bit OS on a virtual server (VMsphere). Our media server, which is not a virtual, with Backup Exec 12.5 SP4 is also Windows 2008 Standard SP2, 64 bit OS. I have read much on this, including the MAPI version issue. The problem is that we also have a Blackberry server, 2008 Standard SP2, 64bit and we are hesitant to upgrade MAPI at this time. The issue is that each job runs at 400mb a minute, which is horrendously slow. How can we be sure that the Mapi upgrade will fix this? I have installed the Exchange Management Tools on the media server as well.