this came from the AVG Free Forum
It is normal that AVG shows that files, the MBR or Boot record to have
changed. These are done during normal maintainance, when you or windows
updates files or have had to correct errors on the drive. The only time that
you should worry is if they also show as infected.
To get AVG to quit showing them as changed, open the AVG Test Center, click
the F3 key on your keyboard and tell it to accept the changes. If it still
shows something as changed after this.. delete the file named AVG7QT.DAT in
C:\ and AVG will rebuild it the next time it is run.
This should fix everyone's problem
You can do the fix or just ignore it- I just ignore it because it is
acutally not a virus
robin