True, but what if it's stolen while the laptop is turned on and the disk keys are in memory? I rarely shut my laptop off, and while I may be a little overly pa

True, but what if it's stolen while the laptop is turned on and the disk keys are in memory? I rarely shut my laptop off, and while I may be a little overly paranoid, it is certainly possible for a local attacker to gain memory bus access and read out disk encryption keys. Multiple layers of security are always good!