Microsoft XP SP3

Fixing holes patching this and that ok, however the possibility of more backdoors being added won't take the chance I'm cool with SP2.

 

I'm with you. SP2 is enough, no need to gum up anymore or make new problems that didn't exist before then whats already there. Malware authors have the corner on that as it is. Security Vendors can plug the holes nicely enough thank you as well as freelance third party programs.

This is it for me too.