Which U of O, kitsune? I was just going to give a whole handful of horror stories about attempting to own a bicycle in Eugene!

That being said, yes, bike theft is a huge problem. I honestly wouldn't recommend bringing anything but the most beaten of beaters on campus. There are things you can do to avoid having to bring your seat and wheels into class, which kitsune covered, but in my experience, anything that seems remotely nice gets trashed. I wrapped my frame with duct tape.

I eventually transfered to another university, and it was just as bad there. A friend of mine went to the Univeristy of Washington and was walking down the street when a pickup truck drove by with an entire rack of bicycles in the bed. Apparently it had been removed for sidewalk construction and someone had seized the opportunity.

Campus security might offer a bicycle registration program, but ours was more symbolic than anything else. I didn't bother having anything nice until I moved off campus, and then I kept it locked in my apartment.

I'm hoping someone else has positive things to say, too.