Saturday, trucking along on my new Trek 720, with my newly installed fenders. Beautiful day, beautiful bike... dodging potholes, and hitting a lot of them regardless- and I hear a grinding coming from (seems like) my front wheel. I stop, pick up the front wheel, spin it, no noise. Ride another 100 meters, hear the rubbing grinding... Spin the wheel, no noise. Ride 100 meters, really insistent grinding... stop, spin front wheel, no noise... for giggles I started to pick up the rear end and noticed all FOUR stays had come undone. Apparently the jars from the potholes had popped off one of the draw bolts, and then the other 3 followed. I must not have tightened them down enough.
So I cussed all the way home.
I stole 4 draw bolts from another fender (that I lost 2 draw bolts from). Got it re-installed and tightened down today. I'll be going out and tightening again and then using clear nail polish to seal the threads.