OK. So you are saying that I could as an example set not to check packer in the File-shield, and then set higher sensitivity and check all packers with IM- and P2P-shields (and maybe Mail- and Web-shield too).

To do a deeper scan of files coming from IM, P2P, Mail and Web (that is the highest risks) and just a normal quick scan in the regular file-shield (only risk then beeing files from CD and USB-disks)?

But if I have set the File-shield to the same high level as IM and P2P (I have it like this now, and except from large delay when copying “packed” EXE files it works ok) then having IM and P2P enabled is just wasting RAM and CPU? Or doen’t these shields use any extra RAM (are they in the same “file”)?