I was slightly inconvenienced by having the new version of boost_signals-vc100-mt-gd-1_50.dll that I had just built flagged by Norton as suspicious and placed in 'quarantine'. "Name of detection given by Symantec product: suspicious.cloud.7.f" But I was impressed that reporting this to Symantec I got (in 48 hours) this response: "Dispute Submission [2985065] Symantec FP Incident Response falsepositives@symantec.com" saying that it was now whitelisted in the daily virus definitions update. Paul PS I have had bjam/b2 also flagged in the past saying it only had five users! --- Paul A. Bristow, Prizet Farmhouse, Kendal LA8 8AB UK +44 1539 561830 07714330204 pbristow@hetp.u-net.com