I hate to resurect a post this old, BUT!
Last week someone hacked my combonation cable lock. I have read post after post of how they can be cut in a matter of seconds, but where I work isn't a crime zone so I thought it would be safe. To make a long story short my bike was thrown into the yard when I noticed it had been broken loose. On closer inspection it looked like the person had just pulled the top tube tight against the lock, given it a quick hard jerk and broken the inards of the combo lock!

If you notice the key way that inserts into the locking body has shallow cuts in it and there are rings of steel or plastic that hold them in when set. These where stripped off the locking rings and keyway. I guess if it gives a little in each area it pops open! Now, I'm wondering if the key lock would be better myself?
I think the only reason the perp didn't ride it away was that I run eggbeater peddles and the fool couldn't ride it in plain sneakers. I can only hope he ruptured a testicle when he slipped off them!

I am beginning to think I will use a small cable lock around the front wheel as well as a regular cable lock to deter the opportunist theif. Heck I have been looking at the Kryptonite New York Noose this has made me so paranoid!