I am using Norton Internet Security Firewall with Allakhazam.
I always had the same troubles and have to disable the firewall to edit a character, to add a price for an item and several other things where it will begin to enter in some kind of loop if I don't.
With the increasing number of Trojan attacks I receive in this end of the year I don't want to risk to disable it again.
Anyone has a solution besides switching to ZoneAlam ? ;)
Happy new year to you !