What's missing in your post is if you finished intalling XP drivers. Microsoft doesn't do this for us. Dell has most.
I just got a used computer, and before I used it, reinstalled windows xp.
anyway, with ANY application I use, it lags behind, particularly when I scroll up or down in a program.
It's as if I'm dragging it, and it pauses for a couple of seconds, then finally does where I want it. this is very time consuming.
it's a dell latitude laptop with docking station. it does this without the docking station too.
the only thing I can think of, is when I reformatted it, I accidentally closed the laptop, which shut it down. it then resumed the xp installation.
do you think this did it? what is the cause and how do I fix? thanks