1.Rhythmic creaking sound while standing to pedal; swore it was from the bottom bracket. Handlebar/clamp interface. Grease fixed it.
2. Clicking sound at each pedal revolution, seated. Shoelace aiglet. Shortening lace fixed it.
3. Front salmon Kool Stop pads squealed under hard braking when temps dipped below 60*F. Cleaned rim, sanded pads; no solution. Changed rims (for other reasons); fixed it.
4. Another clicking at each crank revolution. Swore it was the bb, but also checked chain and seatpost and handlebar clamp. Continued. It was the bearing on the right Dura Ace 7410 pedal (best pedal ever made, amen. Thank you, Ryan.) Regreased it; fixed problem.
5. Very slight "whuff-whuff-whuff" from the front disc rotor. Removed wheel, put it back in, tightened skewer; fixed it.
6. BB7 pads got really wet and thereafter squealed far, far louder than any old Mafac centerpull; one feared that neighbors would call the police, and I'm only half kidding. Got a good deal on HyRds -- same rotors -- installed these for reasons other than the squeal, but anyway, that fixed the problem.
Envoi: Long ago I owned a 1984 VW Passat ("Quantum") wagon that, at a certain point, in cooler weather, would honk the horn without human intervention when turning right; startled passersby and embarrassed me. Mere time fixed it.