Can you say that you computer is reliable for you?

I'm a tech, and I treat my machines the way a dentist treats his/her own teeth. Whenever I install something new, I defrag the hard drive, run EasyCleaner, run WinDoctor, and create a restore point. If I make a major change(s), I run Acronis True Image. I am diligent to the point of being anal when it comes to security. However, unlike many of my colleagues, I refuse to sacrifice functionality for security. I use two of the biggest targets on the Internet - Windows XP and Internet Explorer 6 - and I never have to clean my system. My system STAYS clean. How? Simple. First is my firewall with IPS (Intrusion Prevention Systems). Most exploits on the Internet can easily be blocked with a good Intrusion Prevention solution right at the network level, before the malicious code hidden in the packets has the chance to compile and execute. If a new zero-day exploit is launched before my firewall is updated, I have two more defenses (besides my regular antivirus and antispyware). Both of these additional programs run in "stealth" mode, just like rootkits, to avoid detection and/or termination by other programs. One program blocks changes to browser settings, registry settings, autostart settings, and other system settings. The other locks the system directories to read-only mode. Finally, I use a web rating tool to advise me against submitting information on any webpage that is unknown or known to be fraudulent, or known to engage in any other "questionable" conduct. And in case I run into a spammer or two, I use Challenge-Response e-mail filtering. Only messages from those I approve can ever reach my inbox, and I can tell quickly if a message in my pending folder was sent by someone I was expecting correspondence from. If I'm ever unsure, I preview the message. If I don't want it, I blacklist the sender, and they never even know I "opened" their e-mail! If a site ever asks for sensitive information, even if I'm sure the site is legit, and even if I'm fairly certain that both the server and my machine are secure, I use either my form filler or my GUI keyboard to enter the information. Wanna see how tough my machine is? Take a look at this: http://www.mylot.com/w/image/1488078.aspx