if the ad says "completed" then the item is no longer for sale (ie sold, or withdrawn etc)
if the ad says "uncompleted" then the ad is technically still live and the owner hasn't bumped it, but equally they may have simply not updated it after selling/withdrawing from sale.
if the ad says "for sale" then it's been recently posted/bumped, and odds are good the seller is active and still trying to sell the item.
worth bearing in mind not every user is going to be visiting here regularly every day, let alone more often than that, so 9 hours before a response isn't anything to cause alarm.