Hi heroxx ,
You are absolutely right!
I am surprised that a lot of AV's will implement sofisticated metods to block a threat but will not do a simple thing: automatically scan a rar/zip download!!!
The reason vehiculated here by avast! suporters/evangelists that while is packed is not a threat is not a valid one; I can ask , why will we have a website shield , the same reson should apply , if is not executed do not scan/block.
The real reason is unpacking a rar file after download and scanning it is time consuming and will loock like Avast is slowing your internet. So, if you right click and scan, this is a different story.
You can download a virus in RAR format, send it by email,save it on a memory stick, give it to somebodyelse and will never be detected by Avast!
The free av which is automatically scanning a rar/zip dovnload is MSE4.
Claudiu