You CAN do something about the spread of those mislabled files.
"launch" is a real handy way to preview a partial download to see if it is what you expected ----- you can kill the DL if it aint.
Limewire defaults downloads to the shared folder, and will share your partial in-progress download. Great, if all is well and content is as advertised -----
IMHO, as a courtesy to the system (and your own person), consider making your DL folder something other than your shared folder. You can move it after you verify/ virus check/ validate it --- instead of spreading the scam.