I just downloaded the latest free version from avast and installed it, EVERYTHING went perfect except it refuses to update, I have installed it on a virus / spyware free computer running windows xp I have tried manual update and turning off the windows firewall and no proxy and even ran the special tool from avast to completely remove avast from the pc all to no avail, I have uninstalled and reinstalled several times, ( note ) this computer WAS running the old version 4.8 before installing the latest version, any help would be appreciated!!