Hi, here's my form:
http://www.seiu32bj.org/seiu-32bj-is-happy-to-announce-2013-youth-brigade/
It works fine in Chrome and Firefox, but when I try it in IE9, it keeps telling me that "There was a problem with your submission. Errors have been highlighted below," and the Name, Email and Phone fields are empty. I've also had users complain that when they submit a form in IE, they get a blank page (and the entry wasn't submitted), but I've been unable to reproduce that problem.
Any idea what could be causing the problem?