Yesterday, she called to say that the police had called her to say they'd recovered a camera they thought might be mine, and we made arrangements to meet the detective this afternoon.
He asked me to describe it, and when I said "Nikon D40," he looked disappointed. They'd found a different Nikon DSLR model. He then brought it out to show me, and it was pretty banged up, with both camera and lens in bad shape.
They found about 40 cameras, not to mention lots of GPSes and cell phones, when they busted a local guy who's apparently known as a tech fence. If you've had stuff like this stolen recently but didn't get around to reporting it, give it a shot.