As soon as I installed Avast 7.0.1407 (removed Kaspersky 2011 due to CPU usage), my Kerio server no longer fetches email from POP3 servers. If I disable Avast Email protection, even just on inbound messages, Kerio fetches the email just fine. Re-enable Email protection, no more email.
What gives? I've used Avast in the past on this same machine and it did not do this. Help, please!