There has been no official release of how many people have signed up for actual plans -- Jay Carney said as much at his daily press briefing today.
http://www.dailykos.com/story/2013/10/04/1244260/-Briefing-b...
Considering the "patient zero" cause celeb from yesterday who supposedly signed up for a plan without a hitch was essentially caught in a lie:
http://www.ajc.com/weblogs/political-insider/2013/oct/03/one...
Forgive me for being a bit skeptical that actual plan signups are a small fraction of your claimed 2.4 million.