Maybe you should have clicked on the links in the link you provided and you would be a little better informed about false positives. The link below came from the link you provided. Also your link says reported to have spyware, I or you can report any thing as having spy ware. They do not list what spy ware it has nor can they because there is none. There was a version that had add ware along time ago version 3.X but LimeWire does not contain spy ware.
http://www.p2pconsortium.com/index.php?showtopic=1950