Windows Live Messenger, or “MSN” as it is still known by most users is undoubtedly one of the most popular IM clients in the world. With Version 2009 a host of new features have been added, some of which we like; others less so. One of the most annoying changes is requirement to have certain file types scanned by an antivirus package before you can send or receive them. Whilst we agree that security is important, we don’t want to be mollycoddled by Microsoft every time someone sends us a Zip file.

http://www.xsreviews.co.uk/editorial...i-virus-check/

Doesn't seem a smart choice to use a system executable to bypass the virusscanner...