Using AVG 8.5 (paid for) with iTunes 8.2

I couldn't find any way to update podcasts using iTunes 8.2.0.23 on a Windows XP laptop with AVG 8.5.387 (paid for). I kept receiving the message "there was a problem downloading (podcast). The network connection could not be established"

The problem lay in the firewall settings: iTunes was set to 'Allow for safe'. When I changed the setting to 'Allow for All', the problem went away.