I had noticed a decline in the performance of my Windows 7 system lately. Ran Webroot several times and system registered as clean. I purchased a Seagate Backup+ external drive and installed it to back up all my files. After downloading all of my files, Webroot pops up and says there are 5 threrats. Ran scan and it comes back clean. However Webroot will pop up again saying there are 5 threats to run scan. Any ideas or suggestions. I am not frequent computer user.Threats register after