Thanks. I don't see any obvious bent pins. One pin wasn't exactly straight, but I didn't see evidence that pushing in the CF card bent the pin more. I straightened it anyway.
One more symptom: the beep doesn't work, apparently. I set it to loud, and I have never heard it.
Full disclosure: I bought the D700 used on Craigslist. I did meet the owner face-to-face and we talked for a long time, so I don't suspect he knowingly sold me a dud. But we all know the risks when buying a used camera body.
Nothing else appears to be broken, and I've gone through a lot of the menu items.