I have the same Problem... i am a long time Avast Pro User and i have a 3 PC License and recommendet it to many others, but it becomes unbareable...
If there is no fix for this soon, i will use another Antivirus solution..
P.S.: Dear Avast, you where my choice No.1, when it came to Virus Protection, but instead of being humble, i now have explicitly CLICK to not have Advertisements send in my Outgoing Mail. Please, you can do better than that.