Let examplify the point
When the screen saver starts for the first time it begins the scan
from the first folder on the disk say
C:\A_folder. OK
When it stops I assume it has reached folder
C:\D_Folder.
The next time the screen saver starts I expect it to
resume from C:\D_Folder
Actually, if the self defence is disabled then the screen saver
does resume from C:\D_folder has expected. This means that the last
scanned folder has been recorded by some means. How could it know
where to resume otherwise ?
On the contrary, if the self defence is enabled the screen saver
starts from the first folder again C:\A_Folder.
By that time a self defence log has been recorded, which says that the
AvastSS.scr has attempted to write to the Avast registry key but
the access has been forbiden. This tells that AvastSS could not record
something.
Comparing the two facts I suggest that AvastSS.scr is not allowed
to record the last place that was scanned.
So I hope that the self defence mechanism will allow AwastSS.scr,
not any scr, but only AvastSS to access the registry otherwise
it is less useful than a scheduled scan. Moreover it ages over
and over the same part of the disk.
All the best