I have just noticed in my ZoneAlarm (Free version) Firewall Log Viewer that there is one item that is blocked on every bootup.
It is outgoing, has a different Destination IP each time and has a Destination DNS of something like a692sm.avast.com. The "692sm" part changes each time. It is blocked by the rule ExtBlockAll2, whatever that is. My free Avast anti-virus seems to be working OK.
I am using Windows 7.
Can anyone tell me what this item is and what should be done about it?