That's because XP sucks. It really really sucks. I mean, I've always rued
the day I switched from my old Mac to Winblows, but XP has got to be the
worst ever. Jeez. Right now I have two OS's in my machine. Guess which one
runs faster? That's right, it ain't XP. The only way to keep XP running as
fast as it was the day you bought it is...not to use it. Don't install any
new apps. Don't install any extra hardware. Don't open any documents, no
photos, no videos, nothing. Then it'll work just like the day you bought it.
Did I mention that XP sucks? No? Well, it does.