Thanks everyone... this is my first bit of travel since the Fun and Excitement began, and I never would have taken a 40 minute turnaround before the Late Unpleasantness on any connection, even domestically. I spoke with my corporate agent today and got them to rebook me, a third time, on the outbound flights that they should have put me on the first time I called...
So now I have a comfy 2 hours layover in IAD. 40 minutes was really suspicious to begin with, I appreciate the validation of my apprehension. Personally, I don't, at all, like to run through an airport, especially one that I very seldom travel through.