Comment Re:Upgrade is reinstall (Score 1) 860
OSX 10.2 (2002) had applications better sandboxed than Windows XP (2001).
Windows by its nature doesnt have sandboxes, and is part of why it grew so fast. The newer Windows RT OS did implement application sandboxes i believe, tied right into the distibution/installation method like on iOS and Android
Its a shame the current (which was not even using RT