scanning using clamscan in centos 5.8 found this 2 viruses. /usr/src/ffmpegscript/all-20110131/3ivx.dll: Win.Trojan.Fakesmoke-33 FOUND /usr/local/cpffmpeg/lib/codecs/3ivx.dll: Win.Trojan.Fakesmoke-33 FOUND are they false positives?