While you are at can you change the date format as well? DD/MM/YYYY instead of MM/DD/YYYY (US). It should go from small to big. The other way around makes my head hurts every time.
Not sure I disagree. Sure the sorting by numbers is of interest to the HN crowd but has little value to anyone outside of IT.
In most cases I'm most interested in the "day" part so its convenient if thats first (which it is in 90% of the world).
The week dates are even more awesome, really: I use them whenever I can.