I do remember those days, and 9x to XP was a big upgrade so I'm sure they fixed some of the issues however It was not until Vista that Microsoft finally fixed the memory management architecture that was a large source of the blue screens of death messages in XP.

I'm not sure how similar the architecture was in this respect between 9x and XP, so I'm not sure exactly what was and wasn't fixed during this upgrade.

I do know that in my own experiences across dozens and dozens of windows xp powered machines across many different companies who unfortunately still use XP, blue screens of death still run rampant, and if not a blue screen of death, then the screen randomly freezing or apps randomly crashing and taking your data with you.