Khai, please don't take this as being disrespectful, I really know very little about Windows, and I'm glad for your trouble-free computing experience, but I am honestly curious. Is this Windows XP Professional straight out of the box, with no other modifications? Or do you have a additional software running in the background to prevent intrusion and/or infection? If so, how much do you have to pay monthly to keep everything up-to-date? Surely, having such a trouble-free system doesn't come without constant vigilance or cost? all the best :)

 Don't sweat the petty things, and don't pet the sweaty things!  ; )