I just saw this in the SF bike coalition news letter. Thought people might be interested:
Berkeley police raided Karim Cycle last week (hoorah!!) and found bikes which owners had reported stolen, and others with altered or defaced serial numbers. Police need our help to make a strong case against what appears to be a deep-rooted bike theft operation, and return as many stolen bikes as possible to their heartbroken owners -- if you were the victim of a bike thief in the past year, be sure to contact San Francisco and Berkeley police with your bike's serial number as soon as possible (SFPD: 415-553-0123; Berkeley PD: 510-981-5900).