I hope I'm doing this properly. After a scan finished a message was displayed telling me that "Worm.MSIL.Arcdoor.ni" had been identified and quarantined. ZASS is doing my antivirus but seems to know nothing about this when I looked for more info. I've searched the net, forums, symantec, and everywhere else I can think of to no avail. My ZASS is set to "on access" with all else enabled. My OS is Vista, browser is Firefox 3.6.15. Is this a false positive?