I got an extra bonus 18 miles in; I got 9 miles into my commute and realized I left my bag on the ground at home. At least it gave me the opportunity to remember to get my Red Cross card for giving blood this afternoon; it's the first time I've remembered it in a year.
I had a bizarre noise going on only when I was pedalling all day (45 miles of it) - the harder I pedalled, the more noise. I found the cause this evening: Broken axle:

Not bad, it made it 15000 miles (today actually, so not quite). $350 bike, freewheel axle. I've been riding on horrendously washboarded gravel roads for 2 weeks due to detours, and I ride on relatively rough roads daily normally, 8 miles a day.
Time to build a new rear wheel. (I'm not disappointed, I'd been thinking about it anyway, but this does mean I'll be riding my wife's bike for a week or so).