I have been using v4 since the beta and haven't had any problems previous to today. Now all of a sudden the firewall is blocking all internet traffic. If I disable it I can access the internet and if I enable it traffic is blocked again. Fortunately I didn't get caught in the recent false positives, but this is really starting to make me worry about the quality of this product. Edit: I see there are other threads with similar issues, but since they were older and this just started for me today I wasn't sure if it was a separate issue do to a bad update or not. In any case I have reverted to using the AV only for now, if not long term. I am assuming due to the lack of response it may just be the same issue others are having.