Bandwith usage is a bit high

For the current release ready to play is using up a large ammount of bandwith according to COMODO security. The current release is totals about 80 MB for a night of computing thats a significant dent to my bandwith per month (thats much more bandwith than i would used acutally playing games). Have i installed it wrong or not opened up a firewall/router port? This usage starts to add up for people in some countries. Im shure MSN can idle on about 5MB for 24 hours.