Checkbox plugin quickly selects and unselects on single tap

[davibe]

I see this on my iphone.

Sometimes clicking on a checkbox quiclky selects and deselects it with a single tap.
It seems to be random, 8 times on 10 the checkbox behaviour is correct.

[scottjehl]

fixed a regression in some android 2.2 devices where checkboxes were toggling on and off on every click. Closed by 8dc5d0d as well.