Version: 2008 Operating System: Mac OS X 10.6 (Snow Leopard) Email Client: pop email messages coming in are all duplicated, sometimes twice--two of the same message, sometimes 4 copies of the same message.
If you select to keep mail on the server with a POP account this behavior is
going to happen. If your ISP reboots their server then all the message IDs
change and Entourage does not know what has been downloaded.
To get rid of duplicates use one of the scripts on this page.