Well, yesterday was great - light traffic (got out of work early), and I beat the rain home by about an hour. Today, however, was another story. Not one, but two flats! I had to walk the last couple of miles home, because I didn't have spare tubes with me. Quick trip to the LBS fixed that, and now I know exactly how to change a tube. Can't wait to get back on the road again tomorrow - the weather is getting better by the day.