Has anyone else come across speculation that Sarah Palin's youngest child is NOT her child? 

Her pregnancy announcement came as a shock to those around her, as she announced it when she was 7 months along, and apparently, not looking the slightest bit pregnant.

http://www.adn.com/front/story/336402.html

A pic of her at 6 months pregnant (before the news was out):

http://www.adn.com/politics/v-gallery/story/339576.html?/politics/v-enlarge/story/339576-a339575-t3.html

Supposedly, her 16 year old daughter was taken out of school for 5 months for an extended case of mono.  Here's a pic of the family (6 months into the pregnancy?).

http://mediatakeout.s3.amazonaws.com/photo/1220106076palinscandal.jpg

I had also read it mentioned that Sarah's water broke in TX...she gave a 30 minute speech, and then flew 11-12 hours back to Alaska with premature labor and delivered in Alaska.

I don't know if any of this is true or not, although it kind of looks like it might be.  IMO, it's not politically significant (if it's true, she was just protecting her daughter/taking care of her family).  I guess it would have been bad for their family if she didn't cover it up?  I dunno.  Just thought it was plausible and interesting.