DavidR
4
OK, the XP Firewall has zero outbound checking so is unlikely to have been blocking avast.
In instances like this on update, normally we would have suggested an avast repair or failing that a clean reinstall of the latest avast version.
Since you are back on avast 8.0 you would have to choose what to do as it would require installing avast 9.0.2008 again ?