seems like "Ws.Reputation.1" is a generic name for something Symantec is not sure about yet...
not necessarily malicious.
i just uploaded bigstar's installer to
http://www.virustotal.com/analisis/d...7e9-1280352547
and it returned "Result:
1/42"
1 is a false-positive is from ClamAv. 41 other antivirus apps came out clean.