Where did you find the thread with the answers? I am having the same problem you had, but I guess with all the time since you posted and found the other thread it is getting lost among all the other threads when I try looking for it. I have seen a number of threads claiming that updates in 2012 and 2013 fixed similar issues, but I JUST discovered Avast, I have the 2015 version and it is disrupting my playing Minecraft. I want to know how I can fix it without looking for yet ANOTHER Anti-virus program (this is the 4th one in 12 months I have tried and I am getting sick of them only being partially effective)