This software was part of clicktilluwin, which we bundled with LimeWire. Apparently Norton Antivirus started to consider it a "virus" on December 27th. I wouldn't call it a true virus since it doesn't propogate itself or inflict damage. But it is damn annoying and we would have never knowingly included it. We apologize that we couldn't respond faster.
We have created a new installer for Windows that does not included clicktilluwin. Please try it out at
www.limewire.com/beta/2.0.3/win/LimeWireWin.exe and let us know if it solves the problem. If everything checks out ok, we will put it in the public upload area.
Thanks to those who have helped us track down the problem.