Within the last month, Norton has begun detecting a list of threats it calls "Suspicious Cloud 9" and says that "Removal Failed" and recommends I take action. The words "Suspicious Cloud 9" is a link and when I click on it, another table comes up identifying the threat as a file and gives its location on my hard drive. Each of these threats are traceable to files that have been on my hard drive for more than 5 years and are all from one GIS software company. I deleted all these files and emptied the recycle bin and I have run Power Eraser but Norton continues to "detect" them. Is this a real threat? What can I do to correct this?