hello ,
yes it is the same problem that i have with avast home version (dutch),i have also remove the first version of avast 4 home(dutch) and downloaded again the same version from the avast site,but nothings work after i instal it,just one time when you have just install it,avast ask to reboot your hd,that time it works but after you want another rebootscan,it fails and it gives a error message but i could not read it because it go's to fast ....
greetings from Belgium,
Michel43.