XP SP3 'Features'

1. Vista's product activation model (yawn...)
2. Cryptographic Algorithms module in the kernal (am sure some developers will love this)
3. Network Access Protection (NAP), as seen in Vista / Windows 2008 - is only of use to companies who chose to implement it.
4. Black Hole Router detection - OK, its there, but I cannot find any information on what XP will do when it finds one!
   
   

There is a small (but noticable) increase in speed when firing up my regular applications, post sp3 install.

I'm not saying it will occur for everyone, but i'm sure it is so for my first upgrade client anyway...

more over @ http://lifehacker.com/385295/field-guide-to-windows-xp-sp3