woah, not fun... same thing happened to me once, but in smaller scale. UPS sent me a huge bill for shipping an air conditioning unit between 2 cities in texas... these people can really get ur info from anywhere... the easiest way for someone to steal your information is through a wireless network. so make sure you keep it password protected. Currently, the best way to do that is to keep it secured with WPA-PSK password that cant be found in any dictionary, or wire up your whole house, and get rid of wireless. This is coming from a guy who knows a whole lot about computer security and how to bypass it. Its easy enough for someone like me to steal the information you lost in under 2 minutes if you dont keep your stuff secure. Don't save your credit card information on a website. Enter it every time. also, that little check box that says save my password? never click that. it just makes it even easier for a hacker to get ahold of your information. you can never be safe online, even with all the security stuff in the world. dont believe me? watch this...
http://www.offensive-security.com/mo...bt3teaser.html
As George Carlin would say: It wouldn't hurt to think like a serial killer from time to time
EDIT: not to confuse anyone, I did not steal TDC57's identity, nor do I do it for a living or fun. You don't have to fear me, because I won't do that kind of stuff to people. You just have to worry about the unethical people that will try to steal your identity