From
http://antivirus.about.com/library/w...aa101502a.htm:
While JS/NoClose might be annoying, according to antivirus vendor Symantec, it is not malicious and it is definitely not a virus. So why are some antivirus companies triggering alerts? Sophos declares it a Java-Script Trojan and states that it "will minimise Internet Explorer and attempt to access other websites without the user's express permission." McAfee also describes it as a Java-Script Trojan, stating that it spawns "a browser window ... which is minimized and can not be easily maximized or closed." Meanwhile, Symantec portrays it as "code that is used by a Web site to create hidden windows for the purpose of displaying advertisements and banner ads. Closing these windows can be difficult, because when you close one, the window that is "hidden" behind it is displayed." Certainly many of us find these spontaneous windows aggravating, but is it doing more harm than good by lumping them in with serious virus and Trojan threats?
It's annoying fucking pop-up machine, no doubt about it, but that's all it is. Though if lots of surfers *think* it's a virus, it might be better to get it off the consoles.