Hi,
I'm not the original poster, but I get this same pop up every time I'm saving my disk.
When asking for details, the program attempting the modification is said to be :
ntbackup.exe
which, of course, is the program I'm using for saving under Win XP Pro SP2
My Avast home version : Apr2008(4.8.1169)
I'm not really anxious about this problem, excepted you have to remain present
while saving, since you have to answer!
Thanks for your attention, Alain
Edited : this is a strange behaviour by ntbackup, after all, since it is only supposed
to read what it is saving!