I did a little test with mcaffe,antivirultoolkit pro and nortons.....I DLed a bunch of viri and trojns just before a reformat..........
antivirultoolkit pro detected almost all of them as soon as they wer unzippid.....where norton and mcaffe did not detect hardly any of them......even when scanned directly....
Also norton and mcaffe are disgusting bloatware......
antivirultoolkit pro is only about 3-4 megs with the full updates..........it is the nicest virul scanner I have ever seen...BTW most hackers use it.
check it out at
www.kasperskylab.com