I've had mine since October 2013.
I replaced the tactile button with one from a mouse, now it never has a problem.
Its been thrown against a brick wall, thrown on the sidewalk several times, dropped dozens of times and been beat with the handle of a screwdriver repeatedly when the fire button acted up.
If they hadn't used such a cheap button this would have been indestructible.

I just bought a new one for 25% of what I paid in 2013 off fasttech here.

Its too bad about the button but I'm still a repeat customer and haven't bought a pack of smokes in years.

Thanks Innokin!