I have Arcserve 2000 Advanced SP2 installed on a Windows 2000 SP2 box. I have Exchange 2000 SP1 on another box with the Exchange Agent installed. I often have the problem of the backup just hanging in the middle of the backup. It never finishes. If I try to stop it, it says its stopping but it never does. I need to reboot the server to get it to stop. The only thing that changed when it happened this time is I added another user to the email alert for the backup. Now I cannot get it to do the backup. CA's support doesn't seem to be able to help.