I think he started the "I might run" noise just to stir things up; now I think his ego is also involved, and if he gets a chance he just might screw things up the way Perot did and help Obama win another term. Hell, maybe that's what he's planning on, considering his past record of supporting the most far-left/socialist politicians around(including Schumer and Lautenberg).
And, in case you're wondering about his position on the 2nd Amendment,
I generally oppose gun control, but I support the ban on assault weapons and I support a slightly longer waiting period to purchase a gun. With today’s Internet technology we should be able to tell within 72-hours if a potential gun owner has a record.