Thats the funny part,…I do not know which kind off attachment was blocked.
It is true I have set everything on “high”.

I am sure this is not a big thing,…but since I am having this for the first time using Avast! I just wondered.
I have looked in my virus chest and event log,…and nothing usual was logged,…

I am using Avast! Home Edition 4.5 latest VPS
OS: Windows XP Professional SP2

thanks for the replies