I have a cheep cable lock that I keep attached to my messenger bag. When I go into the store for a bite I simply wrap it around the wheels (It takes about 30 seconds). Now I know that it will not keep anyone who really wants it from taking it but it keeps the lazy ones from swiping it. Bike theft is usually a moment of opportunity thing. I have a more aggressive lock that I use at Portland State and I was thinking of getting a Kryptonite lock and leave it there at school. Not because they work so well but because they insure your bike up to a certain limit. You buy a lock once and that's it, No monthly fees so you can track the offender. Just no bike stolen, end of story.
Mike -I thought once you got over the hill it would get easier- Frye A.K.A. Frye Bikes