All the encryption in the world will not help you if your computer becomes physically compromised via environmental factors, theft, or intrusion.

It is pretty obvious that you should make sure that your computer is not located in an area that would make it susceptible to fire, water, corrosive agents of any kind, flooding, shock, externally generated electro-magnetic radiation, or other physical dangers such as falling objects. This is an area we are pretty certain you can handle yourself.

However, the two areas that you should be thinking about that are not so straightforward are protecting your machine against:

Theft

and

Intrusion by outsiders

(these sections will be coming soon)

Information Theft - Some Tips

http://www.ozemail.com.au/~netsafe/tips.html