Make sure you have a good anti-malware program installed in your computer and Norton or McAfee don't count! A Squared and Anti-trojan are 2 good programs. Certain websites will install spyware on your computer like The Hal Turner Show web site. I went to his site and e-mailed him and the next thing I know my background guard pops up and says it just terminated a trojan downloader and a LAN bypass. Now it could be Feds bugged his site. No doubt they are monitoring it closely!

A Squared- www.emsisoft.com
Anti-Trojan- www.anti-trojan.net/en