Looks like some of the other networks are having problems with Nastyware
http://www.news.com/8301-10784_3-9937818-7.htmlare being warned that they may get an ad instead of a music or video file on several file-sharing sites in what security firm McAfee says is the most significant malware outbreak in three years.
McAfee Avert Labs reported on Tuesday that more than 500,000 detections of a Trojan horse masquerading as a media file have been found on computers since Friday on services like Limewire and eDonkey.
In the end you're left with a fake MP3 file taking up space, a worthless MP3 player, adware that claims not only to not display popups, but also to block them, and more adware that successfully displays popup and popunder ads," Schmugar writes.
McAfee rates the threat "medium" risk, the highest rating given to any malware since 2005.
Not sure why this malware would target just these network users, that alone bears looking into a little more, this software seems only to be targeted toward FireFox users and a poster has mentioned blocking this address Range ( 85.17.0.0- 85.17.0.255) can block the download server from installing the nastyware.
Stay alert folks and think before you click on links offering something for nothing.