This is very weird. I was filling in the details on my latest “DS-156”:https://evisaforms.state.gov/ds156.asp?lang=1 form, a form the State Department quite helpfully makes available electronically. When I went to fill in question 35, “Has Your U.S. Visa Ever Been Cancelled or Revoked?” on my defeault Firefox browser, it automatically marked “Yes” whatever I clicked. Needless to say, this is _not_ the answer I wanted to communicate to the State Department. So I tried opening up the form in IE, and the problem goes away, i.e. it is possible to mark “No”. Nothing in the source code for the page suggests why there should be a problem here, at least to my untrained eyes. It’s just odd.
UPDATE: A commentator over at “Crooked Timber”:http://www.crookedtimber.org/archives/002647.html noted that it was just an effect of an unclosed tag. Those internets come up with answers quickly!