Originally Posted by Ziemas

Cable locks are totally insecure and can be snipped in a matter of seconds with small hand tools. Using a high-end padlock on a totally insecure cable is foolish and a waste of money.

According to Cycling Plus magazine (May, 2007) they cut a 12mm thick Masterlock cable in 2.8 seconds with 2' boltcutters, a 15mm Blok cable with 'small' boltcutters in 2.6 seconds (this lock was also defeated by a Leatherman tool in 30 seconds!), a Magnum Plus (OnGuard in the States) 25mm thick armored cable in 18.15 seconds with boltcutters, and a Masterlock 30mm armored cable in 4.6 seconds with boltcutters.