I have received two reports of subscribers being denied access to Fine Spangled Sort when they receive a notification of a new article.  Both have McAfee anti-virus software installed on their PCs.  It is possible to unblock FSS in the McAfee settings, and there are several articles and videos on the web showing how it can be done.  I can confirm that I maintain security on Fine Spangle Sort, and have no idea why McAfee should block it.