I got a Firefox message yesterday, saying that it had blocked a suspected attack site, however Norton site safety was showing it as safe. Is it just possible that it is a false report from Firefox? I know I should have noted the URL and submitted it to Symantec for analysis but my first reaction was to direct my browser away from the site quickly. It was actually a popup window that opened from megaupload site which is not uncommon to get these advertising popups, but this is the first one that was blocked by Firefox.