Since I have installed avast (Home edition), the volume shadow copy feature of ntbackup (on Win XP Pro) does not work any more. I have found a thread on this topic on an MS support group that seems to confirm that avast in some way corrupted the registry. Please see the link below. And, btw, I like avast and want to continue using it.
Thanks for the fast reply. I have deleted the key from the registry in order to make volume shadow copy functional again. Will this hurt my avast installation?