There is linux version which does support ubuntu: http://www.avast.com/linux-home-edition Haven’t you seen that there is a linux sub forum: http://forum.avast.com/index.php?board=5.0 speedy? :wink:

The system requirements you have posted is of the windows version. Here is the one for linux version: http://www.avast.com/linux-home-edition#tab3

And as you can see here: http://www.avast.com/linux-home-edition#tab3 it doesn’t support 64 bit OS.