I saw its outdated but since I posted here:
http://forum.avast.com/index.php?topic=67024.0 my problem with Utorrent and no working suggestion or logical explanation besides disabling or uninstalling firewall, I tried searching through the forums and came across this thread explaining that the behaviour of the firewall in Work mode is normal - well I don't think its normal to leave open ports, and also I don't think it's normal to mess-up the firewall settings in the GUI and not to have a normal way of excluding an application from filtering, or to open or close a specific port. The thread itself is outdated but the problem is not, it's still there.