Also note the kickstarter FAQ itself:
https://www.kickstarter.com/help/faq/kickstarter+basics#faq_...
It's not uncommon for things to take longer than
expected. Sometimes the execution of the project proves
more difficult than the creator had anticipated. If a
creator is making a good faith effort to complete their
project and is transparent about it, backers should do
their best to be patient and understanding while
demanding continued accountability from the creator.