Still in use!
Just across the room is a 770EX, running XP and still in daily use for Office 97, Calibre, and some old school games.
It's not connected to the internet, so no security risk, and it still does what it always did, perfectly well.
Couple more upstairs, and when I have time I am going to try putting Win7 on - supposed to be possible - and some flavour of Linux to play with for the future.