This story is flagged, just when it hit 200 Diggs it disappeared from the upcoming stories with most diggs, Digg doesn't want it on it's front page. http://digg.com/news/software/upcoming/mostCurrently the story has 269 "diggs" (or votes up) and counting.
UPDATE (13:20 10 March 2009): The original story with over 300 diggs is no longer showing up in a search for "PIFTS.exe" on digg.com anymore. Lower rated stories still show up but are being systematically removed as this is being written. Screenshots of digg.com:
UPDATE (13:20 10 March 2009): The story about the Digg cover up of the PIFTS.exe cover up has reached Digg itself: http://digg.com/tech_news/Digg_covers_up_Symantec_s_cover_up
UPDATE (14:55 10 March 2009): If PIFTS.exe is related to the FBI's Magic Lantern software, it would not be surprising if Digg was pressured to squelch this.
UPDATE (03:59 31 March 2009): The story in question was the fifth most popular story on Digg that day.