People, I'm trying NOD and KIS to decide which one to buy. (They are not being used concurrently, though) and both are not working as I expected. Here, however, I'll ask about NOD. The problem is that I have a daemon tools installer which has the installer of WhenUSave inside it. If I scan the daemon tools installer, even though NOD32 is set to find potentially unsafe applications, nothing is found. However, If I try to install daemon tools it will extract the WhenUSave installer but NOD32 doesn't allow it to be saved on disk. Up to this it is ok. However, if I turn off NOD I can install daemon tools with no warning and it will save the WhenUSave installer. It doesn't run the installer however. But the file is there. When I start NOD again, if I try to access the folder where the file is in, NOD detects the threat but it fails to delete it if I ask so. It displays a message saying that the file is locked and can't be deleted. It doesn't matter how many times I try it doesn't delete the file. The strange thing is that other anti virus software can delete and I can delete it only by pressing the DEL button meaning that the file isn't locked. Is this normal? Thanks for your patience, Scirious.