All the networks Morpheus uses also suffer the same issues. This virus issue seemed to become endemic last 10 mths or so. Highly probably from the same sources that want to thwart people's enthusiasm to use p2p sharing by loading fake & corrupt files on the network & using auto-spamming techniques. These are groups sponsored to do this. A well known one was Overpeer. Google it & see what I mean.

Advice: See NorbiesWorld (click on link) to get your computer sorted out. And also see WARNING: Viruses on network you should be aware of! (click on link) & ignore files less than 1 MB (1,000 KB) in size. Start using your spam filter if you're using LW 4.10