comodo firewall error and closes after remote desktop connection windows vista

hello, i have a problem with comodo firewall… i have two computers with windows vista, when i connect from computer A to computer B with remote desktop all works fine but if i log on computer B and after try again remote connection from A to B comodo firewall hangs and must be closed. do i discovered a leak? :slight_smile:
can you help me, does someone have same problem?
sorry for my explication and for my english…