More of the same, 1.8F/-17C with light wind this morning. No problems shifting or with brakes. This is my 3rd winter commuting, although last year was so mild it hardly counts, and I have never had any cables freeze. I've had ice build-up on my rims that interferred with braking, but never frozen brakes. Likewise, I've never had any problems shifting gears. Maybe it's because my bikes are never parked outside, always in a basement.