David, I installed Avast pro, and you're right. There was no change in archive settings when I changed the protection level.
But i couldn't understand something.
1) All shields were at normal level, I downloaded two malicious files with mp3 and zip format by FrostWire, and avast didn't detect them.
2) Then I set the level of p2p shield to high, again it didn't detect them as i expected.
3) After that I set the level of standard shield to high (that is, the setting named "All files" under the tab named "Scanner (Advanced)" was selected), i downloaded the same files and avast detected them.
The detection of the mp3 file is normal, but how could it detect the file with zip format? Because in archive settings of the standard shield "ZIP archive" wasn't selected. Besides, when downloading a malicious zip archive by an internet browser, standard shield doesn't detect it (when web shield is paused), and i know this is normal since "ZIP archive" isn't selected.
4) I paused p2p shield and then downloaded the same files. This time, avast detected only the mp3 file. When i continued p2p shield, both of the files were detected, and as you know the all archive types are selected in the p2p shield settings.
So can we say that p2p and standard shield work together when downloading a file from a p2p application?As you can see I'm confused now, please help me. Am i mad?