Sorry to dig up an old post.
There are various encryption programs that should allow you to turn any laptop search into an even greater waste of time for TSA. They are all readily available and much of the encryption is virtually unbreakable. While I'm sure the federal government is perfectly capable of cracking this code if they wanted to, I'm sure airport security is NOT highest in the pecking order of new decryption technology. You'd really have to frustrate a Customs officer for them to deem you important enough to focus a lot of effort on you.
Note, there are also programs available that will allow you to encrypt data on a mass storage device (USB drive, IPhone, Digital Camera, etc). The important element of this system is that the data is not identified as an encrypted volume, thus eliminating suspicion. It will only be recognized as data when connected to a specific computer and then loaded by the software on the host computer. I assure you no average customs agent is capable of pulling this off.
Given the general topic of this folder I'm sure most of you don't need this type of security.
J