in windows we can just simple install addons in firefox and all user can use it
but in ubuntu i found if i install addons it only install for the user i logged in
i.e : if i log on as 'user1' open firefox install dta(down them all) addons i can use dta, but if i log on as another user or create a new 'user2' 'user2' must install dta again to use dta
how can i just install addons for all user in my ubuntu 12.04.1 system???