Here Popfile runs in the current version as spam proxy in combination with Avira Professional Security as virus scanners and Jana (e-mail server). Jana-mail and directory of real-time protection, except virus emails are only marked, but not deleted, so that Jana is not irritated.
For about 2-3 weeks to complete Popfile itself after a few hours and must be started manually. To Jana can not lie, there is nothing in the logs. Usually I notice it only when no new messages arrive more and I'm using VNC to Jana. Then I see the error message, which was completed Popfile and can select whether to send an error report to Microsoft.
If the problem still someone?
I suspect the virus scanner or a current Windows Update last 2-3 weeks.