I was very lucky to make it home on my commute yesterday. On the morning leg, my bike suddenly started shifting funny about halfway to work. The problems continued on the way home, with the chain jumping from ring to ring, and cog to cog. I assumed it was a shifter or cable problem, but the cable tension seemed OK. Took it by the bike shop after I got home, and it turns out that my chain was about to go snap. It had a broken link that was barely hanging on, and I'm really surprised that I was able to make it home like that. Fortunately I took it easy and had my first true recovery pace ride in quite a while, which was good for my legs as well.

I've got a great LBS and my mechanic replaced the chain on the spot. The bike shifted perfectly this morning, so all appears to be well again. Now, if I can just make it home without getting caught in the thunderstorms that are supposed to move through this afternoon and evening.