Could be you reacted simply by virtue of recognizing these as questions on which -- were you to react -- you might have trouble.

Why did Gary Leon Ridgway (aka the Green River Killer) pass the polygraph, and why did poor old Melvin Foster fail his exam when interrogated about Ridgway's crimes?

http://antipolygraph.org/cgi-bin/forums/YaBB.pl?board=Policy;action=display;num=1067927512

We can spin out all sorts of explanations, but they all boil down to the simple truth that polygraphy is quackery.

Still, I wish you the best.  DQing for no good reason is very difficult to deal with, for me at least.  I still loose sleep over failing, and over the thought of the types of people who manage to slip through.  

I'm hoping we'll all live to see the day polygraphy assumes its rightful place in the Toilet of Bad Ideas, along with  phrenology and parachute pants.  (Of course, we'll be too old by then get a second shot.)